My husband's great grandfather Patrick Gallagher married Annie Davie in Glasgow (both were from Ireland). They had 6 children that I know of and their name was spelt Gallacher:
Patrick Gallacher born 15/3/1868
Michael Gallacher
James Gallacher
Mary Ann Gallacher
John Joseph Gallacher
Sarah Gallacher
John Joseph Gallacher married Margaret Fay (who was from Co Down) in 1903 and had 5 children - she later returned to Co Down where their descendents are living to-day. John Joseph Gallacher is buried in Glasgow where he died in 1938.
I would be unterested to find out if there are any other relations still living in Glasgow to-day.
