I am researching the PEI McQuaid's. My husband's grandmother was born there in 1883. She is dau of James Henry McQuaid and Annie Walsh. James is son of James McQuaid and Letitia Doyle. This James came from Ireland about 1840. Letitia was born in PEI. You also have Doyle. So our ancestors may be related twice.
I am doing lots of work on the PEI McQuaid's, trying to piece together the whole puzzle. Email me for more info.