From the Roman Martyology:
On the same day, the memory of St. Abraham, Patriarch and father of all believers.
(Source)
Within the nave of the great basilica church of Santa Maria Maggiore in Rome, one can see the following fifth century mosaic of Abraham, his vision in the plains of Mamre, and the hospitality he provides to the three angels -- a depiction commonly referred to as "the hospitality of Abraham".
Read more about Abraham in the Catholic Encyclopedia.
