Mallon's

Hi my name is Betty Fitzpatrick Miller and I am looking for information on my Great Grandfather John Mallon of whom I have been told came from Ballinasloe, Galway, Ireland.  He was born about 1867 and according to his marriage certificate his father's name was Peter whose occupation is listed as laborer.  I know he had a brother named Patrick and other than that I am at a lost for any other information.  I would appreciate if anyone out there that may have any information that is similar to what I have listed and is willing to share would contact me.  Thank you.