From the Roman Breviary,
Martinae celebri plaudite
N.B. The main feast of St. Thomas Aquinas is on March the Seventh.
“Appended to the Poissy manuscript, occupying folios 425-428, is an addition with the office of the Translation of St. Thomas Aquinas. This feast celebrates the transfer of the relics of St. Thomas from the Cistercian monastery of Fossa Nuova where the saint had died to the Dominican priory in Toulouse on 28 January 1369, and was instituted as a Totum Duplex feast by the general chapter of 1369 with the permission of Urban V.”
The following Hymn is found in several Antiphonale c. 1200 – 1300 and in an Antiphoner printed in Cologne in 1537, this hymn was also used for the Feast of St Peter’s Chains.
Petre, Pontifex Inclite, Vespers Hymn for the feast of St. Peter’s Chair.
One of the many Hymns used in the Mozarabic Rite,
O Petre Petra Ecclesiae, Mozarabic Hymn for the feast of St. Peter’s Chair.
This Feast is also celebrated in the Roman rite on the 17th February.
Herodis Insanus, Ambrosian Vespers Hymn