Saint Bolcan of Derken
- Also known as
- Olcan
- Memorial
- 20 February
- Profile
- Baptized by Saint Patrick.
Studied in Gaul.
Bishop of Derkan, northern Ireland.
Bolcan's school there was one of the best equipped in the island.
- Died
- c.480 of natural causes
- Canonized
- Pre-Congregation
