Saint Mac Nissi of Clonmacnoise

Saint Mac Nissi, also known as Mac Nesi, Mac Nessi, or Macnessius, was a revered Catholic monk and Abbot of Clonmacnoise monastery in County Offaly, Ireland. He was born around the year 574 and served as the abbot from approximately 574 to 590. Little is known about Mac Nissi's early years and family background, as historical records are scarce from this period....