Hi,
I take it that you mean you grandfather was English (birth) and not his surname.
Can you tell us what his actual name was ?
I can see a Matilda Birmingham getting married in 1918 BUT it was in Rathdown which is the outskirts or Dublin and Wicklow.
Birmingham is a popular Galway name but Matilda is fairly rare, was she christened another name do you know ?
Tara