MCCROSSAN Family History
This fine Irish name is an Anglicized form of the Old Gaelic "Mac an Chrosain". The Gaelic prefix "mac" means "son of", plus the personal byname "Crosan", rhymer; hence, "son of the rhymer". This name was borne by two distinct septs, the one belonging to Tir Chonailll (Co. Donegal), and the other to the Leinster counties of Laois and Offaly. Richard Mac Crossan of the Donegal sept was Bishop of Raphoe in that county towards the end of the 14th Century. Present day representatives are widely found in the bordering Counties Tyrone and Derry, but in the latter place, the prefix "mac" has, to a large extent, been dropped.