Crónán of Roscrea was a 7th-century Irish abbot and bishop who served as the patron of the diocese of Roscrea. Born in the territory of Éile to Odhran and a mother from west Clare, he spent his early years in Connacht. Around 610, he returned to his home district and founded Roscrea Abbey, which included a school. He originally settled in a remote, wooded area known as Sean Ros, but later moved to the woods of Cré due to the difficult terrain.