Part of the sketchy oral history of my family (Power, Glynn and Davis ) is that the name Power was a derivation of De La Poer.
It is suggested that De La Poer was originally a French surname and the origin of the De La Poers' in Ireland came about after a French Fleet ship went down off the southern Irish coast, some survivors named De La Poer made it to shore where they settled and after some years they changed their surname to Power. I am not certain of these "facts" but hope further research will add verifiable information to my family history. My paternal grandmothers birth name was Bridget Mary Power from Portlaw, county Waterford and her residence there was at 35 Queen Street, Portlaw.in about 19116-1918.
She later moved to London where she married an Australian soldier named Charles Joseph Hughes. She married again to a Doctor John Joseph Glynn. Any information that can be provided would be greatly appreciated.