Saint Nissen was an early Christian convert who was abbot of a monastery in County Wexford, Ireland.
Life
Saint Nissen was converted to Christianity by Saint Patrick. He became abbot of Montgarth (Mountgarret) Abbey in Wexford, Ireland. His feast day is 25 July.He is additionally celebrated on 24 July in the Orthodox Church
Monks of Ramsgate account
The monks of St Augustine's Abbey, Ramsgate, wrote in their Book of Saints (1921),
Butler's account
The hagiographer Alban Butler ( 1710–1773) wrote in his Lives of the Primitive Fathers, Martyrs, and Other Principal Saints, under April 9,
Notes
Sources