Hello,
I can certainly see the similarity between Dooner and O'DHONNABHAIR. Especially since my name, Mallorey, was actually Maloret (a French name) but was changed when my ancestors immigrated to the US from France. I'm curious though, I've been to Dublin Library where I was able to find the records for Thomas Dooner, my gggg grandfather. Would that name likely be spelled both ways in Ireland or are these two different families. Thanks for any help you can offer. My Dooner ancestors came from County Leitrim