Callum

Padraig Mac Giolla-Domhnaigh
1923

Callum—This is one of the anglicised forms of McCallum (Mac Caluim), which name was written (O'Callum in Argyleshire in the early part of the 16th century.

Alphabetical Index of Anglicised Surnames in Ireland

See also Woulfe’s Irish Names and Surnames
and O'Hart's Irish Pedigrees