Like the other Apostles, the holy Nathanael or Bartholomew, a true Israelite, sincere and without guile, as Our Savior Himself testified, was honored with a vigil which was already noted in the Martyrology of St. Jerome.
The Mass is that of December 20, but at Rome the Office of today was not introduced until much later.
(Source: The New Roman Missal, Rev. F. X. Lasance)
St. Philip Benizi was born in Florence on the feast of the Assumption in 1233. He was one of the first to profess the religious life as a Servite, and in time became general of the Order. With his brethren he preached in many countries of Europe, and journeyed even into western Asia to spread the Christian Faith. In his humility he refused honors, and even the Papacy, which was offered him by the cardinals assembled in conclave. He entered into the glory of heaven in the year 1285.