Isfael

Isfael or Ismael (Old Welsh: Ysmail), often anglicized as Ishmael, was an AD 6th-century medieval Welsh bishop of Rhos and saint. He was allegedly also a Breton prince of Armorica.

Although his anglicized name invites association with the Biblical Ishmael, Isfael is actually a native Welsh name (or even epithet) meaning 'under prince'.

Isfael was said to have been the son of Budig ap Cybydan, a native of Cornouaille and eventual king of Armorica, and the brother of the martyr Tyfei and Bishop Eudoggwy (Oudoceus) of Llandaff. His mother may have been Arianwedd, the daughter of Saint Issel and the sister of Saint Teilo. In Rhygyfarch's hagiography, Isfael was said to have been one of the three principal disciples of Dewi Sant; in the Book of Llandaff, he is also included among the students of Dubricius and Teilo and said to have succeeded David as the bishop of Menevia (St David's). (Since he does not appear in that parish's records, it was Rees's opinion that he was at most a suffragan bishop under Teilo.) His eventual see was in Rhos at present-day St Ishmaels.