Chair of Saint Peter

The relic itself is described as an oaken chair damaged by cuts and worms. The chair has metal rings attached to each side, allowing use as a sedia gestatoria. The back and front of the chair are trimmed with carved ivory. This description comes from 1867, when the relic was photographed and displayed for veneration.[5]

The reliquary, like many of the medieval period, takes the form of the relic it protects, i.e. the form of a chair. Symbolically, the chair Bernini designed had no earthly counterpart in actual contemporary furnishings. It is formed entirely of scrolling members, enclosing a coved panel where the upholstery pattern is rendered as a low relief of Christ instructing Peter to tend to his sheep.[6] Large angelic figures flank an openwork panel beneath a highly realistic bronze seat cushion, vividly empty: the relic is encased within.[lower-alpha 1]

The cathedra is lofted on splayed scrolling bars that appear to be effortlessly supported by four over-lifesize bronze Doctors of the Church: Western doctors Saint Ambrose and Saint Augustine of Hippo on the outsides, wearing miters, and Eastern doctors Saint John Chrysostom and Saint Athanasius on the insides, both bare-headed. The cathedra appears to hover over the altar in the basilica's apse, lit by a central tinted window through which light streams, illuminating the gilded glory of sunrays and sculpted clouds that surrounds the window. Like Bernini's Ecstasy of Saint Theresa, this is a definitive fusion[7] of the Baroque arts, unifying sculpture and richly polychrome architecture and manipulating effects of light.

Above, on the golden background of the frieze, is the Latin inscription: "O Pastor Ecclesiae, tu omnes Christi pascis agnos et oves" ('O Shepherd of the Church, you feed all Christ's lambs and sheep'). On the right is the same writing in Greek, "ΣΥ ΒΟΣΚΕΙΣ ΤΑ ΑΡΝΙΑ, ΣΥ ΠΟΙΜΑΙΝΕΙΣ ΤΑ ΠΡΟΒΑΤΙΑ ΧΡΙΣΤΟΥ".[8] Behind the altar is placed Bernini's monument enclosing the wooden chair, both of which are seen as symbolic of the authority of the Bishop of Rome as Vicar of Christ and successor of Saint Peter.

Early martyrologies indicate that two liturgical feasts were celebrated in Rome, centuries before the time of Charles the Bald, in honour of earlier chairs associated with Saint Peter, one of which was kept in the baptismal chapel of Old St. Peter's Basilica, the other at the catacomb of Priscilla.[5] The dates of these celebrations were January 18 and February 22. No surviving chair has been identified with either of these chairs. The feasts thus became associated with an abstract understanding of the "Chair of Peter", which by synecdoche signifies the episcopal office of the Pope as Bishop of Rome, an office considered to have been first held by Saint Peter, and thus extended to the diocese, the See of Rome.[9]

According to historian Anton de Waal, although both feasts were originally associated with Saint Peter's stay in Rome, the ninth-century form of the Martyrologium Hieronymianum associated the January 18 feast with his stay in Rome, and the February 22 feast with his stay at Antioch.[5] The two feasts were included in the Tridentine Calendar with the rank of Double, which Pope Clement VIII raised in 1604 to the newly invented rank of Greater Double.

In 1960 Pope John XXIII deleted the January 18 feast from the General Roman Calendar, along with seven other feast days that were duplicate feasts of a single saint or mystery. The February 22 celebration became a Second-Class Feast. This calendar was incorporated in the 1962 Roman Missal of Pope John XXIII, whose continued use Pope Benedict XVI authorized under the conditions indicated in his motu proprio Summorum Pontificum. Traditionalist Catholics who use older calendars continue to celebrate both feast days: Saint Peter's Chair at Rome on January 18 and the Chair of Saint Peter at Antioch on February 22.

In the new classification of holy days introduced in 1969, the February 22 celebration has the rank of Feast.

• List of works by Gian Lorenzo Bernini
• Index of Vatican City-related articles

 This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Chair of Peter". Catholic Encyclopedia. New York: Robert Appleton Company.

External video
Smarthistory: Bernini's Cathedra Petri (Chair of St. Peter)

• Media related to Cathedra Petri at Wikimedia Commons
• Altar of the Chair of St. Peter
• Catholic Encyclopedia: "Chair of St. Peter" — article contains photograph of the chair of Charles the Bald
• Encyclopædia Britannica Online: Gian Lorenzo Bernini
• "Masaryk University"