Eolais "Mac Biobhsach" (alias "Eolus", fl. AD 900) was a petty chieftain in Gaelic Ireland, who united various sept's of the "Conmaicne Réin" tribe, under his full chieftain-ship.
Eolais "Mac Biobhsach" (alias "Eolus", fl. AD 900) was a Gaelic Ireland chieftain of the 10th century. He was the first chieftain to unite all the people of the "Conmaicne Réin" tribe, under a single full chieftain-ship.