Cathal Ó Matadain, Irish philosopher, died 1343.
Ó Matadain is described in the Annals of Lough Ce as a sage of Ireland. In 1343, in unknown circumstances, he was killed by the Clann Ricairt, or the Burke family of Clanricarde in what is now County Galway.
External links https://www.ucc.ie/celt/published/T100010A/index.html