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The Crowley Genealogy Tree is where people can add there information to the tree that I've not been able find yet. Plus it help's me to understand the Crowley name and how far it goes back and where it first started.
Irish (Cork): Anglicized form of Gaelic Ó Cruadhlaoich ‘descendant of Cruadhlaoch’ a personal name composed of the elements cruadh ‘hardy’ + laoch ‘hero’. There has been some confusion with Crawley . English: variant of Crawley .
Source: Dictionary of American Family Names 2nd edition, 2022