c. mid to late 5th century) was an Irish saint installed by St. Patrick as pastor of the Domnach Mór (Big Church) in Templeport, County Cavan, Ireland which was erected after destroying the idol of pre-Christian god Crom Cruach at the nearby plain of Magh Slécht.
The most common include Banbanus, Banbhanus, Mauranum cognomento Barbanum, alias Banbanum, Banuanus Sapiens.
The Vita tripartita Sancti Patricii or Tripartite Life of St.Patrick, page 93 states- "Patrick founded a church in that stead, namely, Domnach Maighe Sleacht, and left therein Mabran [whose cognomen is] Barbarus Patricii, a relative of his and a prophet.
"[3] The Annals of the Four Masters state at 448 - "M448.2, 9- His sister's son was Banban, of fame;" Flann's poem in The Yellow Book of Lecan states- "Seannan was his brother or cousin of fame" Said by John Colgan to be a son of St.Patrick's sister, Richella.
It may or may not be a coincidence that the next saint's name listed at 9 May in the Bollandists' Acta Sanctorum is St.Bricín of Tomregan which is also in Magh Slécht.