Hi Fred,
Just to back up the link. Patrick's wife (and therefore William,s mother) was called Margaret, and Bernard (Elizabeth's father) had a daughter called Margaret Jane. I have other children for William and Elizabeth: Emelia; Elizabeth; Mary and Adelaide. Any of this familiar to you? I always knew there must be more children around as they married in 1855 but the first birth I could find was Emelia in 1864.
I think we share the same ggggrandfather in Bernard Doonan.
Hope this sounds right to you.
Take care,
Andrea