For a while now I have hit a brick wall and I was wondering if anyone could help me. My great-great grandmother was called Elizabeth McNamee (1892-1980) and she married David Sweeney in 1917. I found records in the 1901 and 1911 Irish Census that provided the names of her parents John and Mary along with three siblings Ellen, John and William (living in Lepper Street, Belfast) . Her father died in 1910. However I have been unable to find a marriage or birth record that provides me with Mary's surname.