Hi all,
I am very late in joining this interesting thread. I am a great-grandson of Annie Marr (1868-1920), daughter of Robert Marr and Martha Sloan (from Co Antrim, NI). Annie married John Davidson Phillips Robertson. My grandfather, George Robertson, was one of their children.
I have a Family Tree on Ancestry (which I had thought was extensive but appears not!). It covers many Marrs but there are many more Marrs I now see!
Stuart Turner