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Sixtus

Pope Sixtus IV (Francesco della Rovere; 21 July 1414 – 12 August 1484) was an Italian prelate who served as pope from 9 August 1471 until his death, succeeding Paul II as head of the Catholic Church and temporal ruler of the Papal States. Born to impoverished parents near Savona in Liguria, he entered the Franciscan Order as a youth, distinguished himself through theological scholarship, and ascended ecclesiastical ranks to become Minister General of the Franciscans in 1464 before his papal election. His pontificate emphasized Renaissance-era patronage, including the restoration of the old Cappella Magna into the Sistine Chapel—named after him—between 1477 and 1480, which featured frescoes by artists such as Botticelli and Perugino. Sixtus also founded the Vatican Library in 1475 and undertook urban improvements in Rome, such as bridges, churches, and hospitals, reflecting a commitment to cultural and infrastructural renewal amid the era's artistic flowering. Yet Sixtus IV's legacy includes marked controversies, particularly his extensive , through which he elevated numerous relatives—including nephews like Giuliano (later )—to cardinalates, bishoprics, and administrative roles, often granting them vast estates and revenues that fueled familial wealth accumulation and perceptions of corruption. This practice, while not unique to his era, dominated his later years and diverted resources from broader Church reforms, intertwining papal authority with dynastic ambitions. His immersion in Italian politics exacerbated factional violence, as seen in tacit support for the 1478 against the Medici in , leading to excommunications and wars that strained papal finances and prestige. These elements underscore a pontificate blending institutional enhancement with personal and political excesses, shaping the Church's role in late medieval power dynamics.

Etymology and Historical Usage

Linguistic Origins

The name Sixtus derives from Late Latin, functioning as a variant of Sextus, which stems from the ordinal adjective sextus meaning "sixth" in a sequence, often denoting the sixth-born child in Roman families. This usage parallels other Roman cognomina like Quintus (fifth) and Septimus (seventh), employed to mark birth order among siblings. An alternative etymology links Sixtus to the Greek proper name Xystos (Ξύστος), signifying "scraped," "shaved," or "polished," potentially alluding to a smoothed or refined quality, as in a polished surface or personal cultivation. This Greek root was Latinized as Xystus before evolving into Sixtus in ecclesiastical contexts, reflecting the Hellenized influences in early . The "sixth" interpretation predominates in onomastic traditions, while the Greek "polished" origin better suits early Christian figures like , whose name likely originated in Greek-speaking regions; retrospective papal enumeration as the sixth successor to may have reinforced the numerical connotation.

Adoption in Early Christianity

The name Sixtus, likely the Latinized form of the Greek Xystos meaning "scraped" or "polished," first gained prominence in early Christian contexts through its association with ecclesiastical leaders in Rome. Sixtus I, a Roman of Greek descent and son of a man named Pastor, served as bishop of Rome from approximately 117 to 125 AD, marking the earliest documented use of the name in Christian records. Although some later traditions speculated that the name derived from the Latin sextus ("sixth") to reflect his position as the sixth successor to St. Peter, this interpretation lacks contemporary evidence and is generally regarded as a folk etymology rather than the primary origin. His tenure, amid growing Roman persecution of Christians, helped embed the name within the nascent Church's hierarchy, though little is known of specific contributions beyond standard episcopal duties like ordaining clergy. The name's adoption expanded with Sixtus II, elected in 257 AD during the Valerian persecution, who was a key figure in defending clerical privileges and scriptural access. On August 6, 258 AD, Sixtus II and four deacons were executed by beheading after holding open-air liturgies defying imperial edicts, an event chronicled in early Church writings that elevated the name's martyr status. This martyrdom, referenced by contemporaries like of , reinforced Sixtus as a symbol of fidelity amid crisis, influencing its selective use among later Christian clergy rather than widespread lay adoption. Empirical records from the period, such as the , indicate the name remained rare outside Roman episcopal circles, reflecting early Christianity's tendency to retain Greco-Roman nomenclature while infusing it with theological significance through holy figures. By the , the papal lineage—including these early Sixti—contributed to the name's endurance in , though its prevalence was confined primarily to religious elites rather than broad . No substantial evidence exists for pre-Christian widespread use among proto-Christians or its ritualistic adoption beyond honoring successors in the Roman see, underscoring a pragmatic rather than symbolic embrace tied to institutional continuity. Later revivals, such as Sixtus III (432-440 AD), built on this foundation but occurred outside the strictly early period.

Popes Named Sixtus

Sixtus I

Sixtus I, also spelled Xystus I, served as the sixth Bishop of , succeeding Alexander I and preceding Telesphorus, with his pontificate dated approximately from 115 to 125 AD according to most ancient catalogues, though places it from 114 to 124 or 119 to 128. All early sources, including the Liberian Catalogue and Eusebius's Historia Ecclesiastica, concur that his reign lasted about ten years during the early under Emperor . A native , he was the son of a man named , and little is known of his personal life beyond these details preserved in later compilations. The , a 6th-century biographical collection, attributes to Sixtus I several decrees aimed at regulating and church administration, including the requirement that sacred vessels be touched only by ordained ministers such as priests and deacons, the recitation of the by the priest together with the congregation immediately after the in the , and the stipulation that bishops returning from visits to the must present confirmatory letters. These measures reflect early efforts to standardize practices in the Roman church, distinguishing clerical roles and ensuring apostolic oversight, though their attribution to Sixtus relies on retrospective tradition rather than contemporary documentation. No writings or major doctrinal contributions from Sixtus survive, and his pontificate occurred in a period of relative peace for the Roman Christian community before intensified persecutions. Tradition recorded in the claims Sixtus died as a and was buried on April 3 near the tomb of in the cemetery, with his feast day observed on April 6 in the . However, early historians like and , who list him among the apostolic successors, provide no evidence of martyrdom, rendering such accounts doubtful and likely pious embellishments added in later centuries. His relics were reportedly translated to in 1132, underscoring his veneration in medieval despite the scarcity of verifiable historical details.

Sixtus II

Sixtus II served as Bishop of from August 31, 257, until his martyrdom on August 6, 258. His origins remain uncertain, with the describing him as Greek by birth, though this claim is disputed among historians. Elected shortly after the death of his predecessor, Stephen I, Sixtus II inherited a church strained by internal disputes and external pressures from the . During his brief tenure, Sixtus II adopted a conciliatory approach toward the and Asiatic churches, particularly in addressing the controversy over the baptism of heretics, where of advocated while upheld the validity of baptisms performed outside the church. Unlike Stephen I, who had excommunicated dissenters, Sixtus restored communion without altering the Roman practice of accepting such baptisms, thereby easing tensions without conceding doctrinal ground. Letters attributed to him, preserved in the (volumes V, 79–100), reflect efforts to maintain unity amid these debates. Sixtus II's papacy coincided with escalating persecution under Emperor , whose 257 edict targeted Christian by forbidding assemblies and demanding sacrifices to Roman gods. Defying the decree, Sixtus resumed meetings with the Roman in subterranean cemeteries, prioritizing pastoral duties. This act of resistance led to his arrest; on , 258, he was beheaded while addressing the faithful in the Cemetery of Praetextatus, accompanied by deacons Januarius, Vincentius, , and Stephanus, with Felicissimus and Agapitus suffering the same fate later that day. Cyprian of Carthage documented the event in a letter dated shortly after, describing Sixtus's execution during a liturgical gathering in the and framing it as part of Valerian's broader policy to punish leaders summarily, including of and enslavement for confessors. Sixtus II's steadfastness under solidified his as a martyr-saint, with his feast observed on or 7 in the .

Sixtus III

Sixtus III, a Roman by birth and son of a man named Xystus, served as a in prior to his election as on July 31, 432, succeeding Celestine I. His pontificate, which ended with his death on August 19, 440, focused on doctrinal orthodoxy amid ongoing Christological disputes and the lingering effects of . Prior to his elevation, Sixtus had engaged in debates against —a emphasizing human over —and , which separated Christ's divine and human natures into two distinct persons. Sixtus endorsed the decisions of the in 431, which condemned and affirmed the title Theotokos (God-bearer) for the Virgin , thereby upholding the of Christ's natures. He corresponded with key figures, including a letter to of seeking reconciliation while insisting on Nestorius's deposition, and missives to the bishops of and reinforcing anti-Nestorian positions. Additionally, Sixtus addressed Pelagian sympathizers in , where certain monks accused him of leniency toward the heresy; he refuted these claims in a direct to the bishops, condemning Pelagian errors and affirming Augustinian views on grace. He also protested —a dualistic sect blending and asceticism—in letters to Gaul's episcopate. In , Sixtus undertook significant ecclesiastical construction and restoration to enhance worship spaces and counter pagan influences. He restored the Basilica Liberiana, later known as , commemorating the Marian apparitions reported in 352. He enlarged the Basilica of St. Lawrence Outside the Walls and secured relics and precious gifts for the Basilica of St. Paul Outside the Walls. These efforts, funded partly through papal resources and donations, symbolized the Church's consolidation in a city recovering from sackings and imperial decline. Sixtus was succeeded by Leo I, who built upon his predecessor's doctrinal and architectural legacies. His feast day is observed on March 28.

Sixtus IV

Francesco della Rovere was born on 21 July 1414 near Savona in the Republic of Genoa to poor parents and entered the Franciscan order as a child. He studied and taught philosophy and theology at universities in Pavia, Padua, Bologna, and elsewhere, rising to become Minister General of the Franciscans in 1464. In 1467, Pope Paul II elevated him to the cardinalate, and following Paul II's sudden death on 26 July 1471, a conclave elected della Rovere as pope on 9 August 1471, after which he took the name Sixtus IV. During his thirteen-year pontificate, Sixtus IV focused on ecclesiastical reforms, artistic patronage, and Italian politics, commissioning the construction of the between 1473 and 1481—named in his honor—and establishing the in 1475 to preserve classical and Christian manuscripts. He approved the feast of the for the universal Church in 1476 and canonized St. in 1482, reflecting his Franciscan background and emphasis on devotion to the Virgin . However, his reign involved extensive , as he appointed seven nephews to the —including Giuliano della Rovere, the future —and granted them territories such as and vast benefices, which strained papal finances and fueled accusations of corruption from contemporary critics. Sixtus IV's political interventions exacerbated conflicts across , including tacit support for the family's failed conspiracy against the in in 1478, after which he excommunicated and placed under , though the sentence was later lifted amid broader diplomatic failures. He issued the bull Exigit sincerae devotionis in 1478 authorizing the establishment of the at the request of and to combat perceived heresies among conversos. His alliances and wars, such as against and in support of interests, entangled the papacy in peninsular strife, contributing to a legacy of administrative innovation overshadowed by familial favoritism and militarism. Sixtus IV died on 12 August 1484 in at age 70, reportedly from a fever exacerbated by over a nephew's death.

Sixtus V

Felice Peretti, born on 13 December 1521 in Grottamare near Montalto in the , entered the Franciscan Order as a novice at age 12 and was ordained a in 1547. He earned a in theology in 1548, served as an in from 1557, and rose through ecclesiastical ranks, becoming a in 1570 under . Peretti was elected pope on 24 April 1585 following the death of Gregory XIII, taking the name Sixtus V, and was crowned on 1 May 1585 after a lasting four days. Sixtus V restructured the by establishing 15 permanent congregations of cardinals to oversee specific administrative functions, formalized in the bull Immensa aeterni Dei on 22 January 1588. He limited the to 70 members via the bull Postquam verus on 3 December 1586 to enhance efficiency and reduce corruption. Enforcing decrees of the , he mandated detailed quinquennial reports from bishops during ad limina visits and elevated standards in to support efforts, including missions in and the . In , Sixtus V transformed by constructing the Acqua Felice aqueduct—spanning 20 miles—to supply water to the city and erecting ancient Egyptian obelisks as landmarks before major basilicas, such as in , to guide pilgrims. He extended straight thoroughfares connecting the seven principal churches, rebuilt the , advanced work on including its cupola, and initiated drainage of the to mitigate River flooding. These projects, executed with rigorous oversight, laid foundations for the city's layout. Financially, Sixtus V amassed a treasury surplus of approximately 3 million gold scudi and 1.6 million silver scudi through tax increases, public loans, and reorganization, while establishing Vatican printing presses. He ruthlessly suppressed banditry in the , ordering summary executions and displaying severed heads on Sant'Angelo Bridge to enforce order. Internally, he opposed Protestant influences and excommunicated figures like Henry of , though his foreign policy prioritized papal security over broader alliances. Sixtus V died on 27 August 1590 at the in , reportedly from exhaustion or illness following a fever. His stabilized the financially and administratively, while his urban initiatives enduringly reshaped as a center of Catholic pilgrimage and power, though some contemporaries criticized his severity and , such as elevating his 14-year-old grand-nephew to .

Other Religious Figures

Sixtus of Reims

Saint of (died c. 300), also known as Sixte de Reims, is venerated in Catholic tradition as the inaugural bishop of , active during the late third century when began organizing in amid . He is credited with establishing the in the upper part of the city, a strategic location in the of Gallia Belgica Secunda, alongside his successor or associate Sinicius (or Sinicus). Historical records of early bishops are sparse and reliant on later accounts, with no contemporary documents confirming Sixtus's activities, though his role aligns with the gradual from to provincial centers during the reigns of emperors like and . Ninth-century Hincmar of recorded that Sixtus was sent from by (r. 257–258) specifically to support missionary efforts in , countering earlier legends portraying him as a direct disciple of . This mission-oriented narrative reflects the era's emphasis on from , though Hincmar's writings, while influential, postdate the events by over five centuries and blend with hagiographic elements to bolster Reims's ecclesiastical prestige. Sixtus's tenure, estimated around 260–280 or into the 290s, occurred before the more documented baptisms under later bishops like Remigius, amid uncertainties in the precise timeline of Christianity's foothold in . Sixtus is honored as a and , with his feast day observed on August 31, often jointly with Sinicius, underscoring their foundational partnership in the . Veneration persists in local traditions, though without evidence of martyrdom or extensive relics, distinguishing him from contemporary papal figures like Sixtus II, who faced execution under . The account's credibility rests on medieval chroniclers like Hincmar, whose motivations included reinforcing archdiocesan authority, yet it coheres with broader patterns of Roman-directed evangelization in the third century.

Sixtus of Siena

Sixtus of Siena, born in 1520 in , , to a Jewish family, converted to in his youth and subsequently entered the Franciscan order, where he pursued theological studies and began preaching across . His conversion and subsequent writings positioned him as an outspoken critic of , including anti-Talmudic arguments that contributed to polemical efforts against Jewish texts during the era. In the early 1550s, Sixtus faced scrutiny from the for alleged , possibly related to his interpretations of Scripture or lingering Judaizing tendencies; he was convicted of or and sentenced to death in around 1552–1553. His execution was averted through the intervention of a inquisitor—later —who facilitated his , pardon, and transfer to the , allowing him to continue scholarly work under closer ecclesiastical oversight. Sixtus's most significant contribution was his Bibliotheca Sancta (Venice, 1566), an eight-volume Latin treatise on biblical interpretation, authorship, versions, and canon, composed as a defense of Catholic scriptural doctrines post-Council of Trent. In this work, he systematically addressed the Old Testament canon, distinguishing undisputed books from those contested by Protestants—introducing the term "deuterocanonical" for the latter to affirm their secondary but authoritative status within the Catholic tradition. He also produced homilies, mathematical treatises, and other theological writings, though his polemical stance against Judaism drew criticism from Jewish sources for inflammatory rhetoric. Sixtus died in Genoa in 1569.

Secular and Modern Figures

Prince Sixtus of Bourbon-Parma

(1 August 1886 – 14 March 1934) was a prince of the and a in the Belgian army during . Born in , he was the fourteenth child and sixth son of , from the duke's second marriage to Infanta Maria Antonia of Portugal. His family maintained neutrality in the war, but Sixtus and his brother Xavier enlisted in the Belgian forces, while other brothers served with the . In March 1917, Sixtus served as the intermediary for his brother-in-law, Emperor I of , in secret negotiations with President and Foreign Minister to explore a compromise peace separate from . pledged in letters to recognize claims to Alsace-Lorraine, restore and , and support France's colonial aims, but insisted on retaining Bosnia-Herzegovina and maintaining the on Italian borders. The talks collapsed due to Allied insistence on German involvement and 's unwillingness to pressure ; the letters were leaked by in April 1918, discrediting 's diplomatic credibility and portraying as duplicitous for publicly denying the overtures while privately pursuing them. On 13 November 1919, Sixtus married Hedwige de La Rochefoucauld, daughter of the Duke of Doudeauville, in . After the war, he resided primarily in . He died on 14 March 1934 in and was buried at Souvigny Priory in .

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