Pedrigee of Crowleys/O’Crowleys (Ó Crualaoich:Hard Hero/Warrior) West Cork, from Carew manuscript.
Dr. Edward McLysaght, the genealogist, has the Crowleys as a Sept of The McDermots of Moylurg, Roscommon and migrating to West Cork c 12th Century. Presumably they were Mercenaries.
In the 1641 Depositions the claims of Planters for damage due to the Uprising there are frequent references to members of the extended family.


