I am related to John & Mary McMahon. They had 7 children -Cornelius, Mary, Michael,Caroline, Ellen, Bridget and Thomas. Michael is my great grandfather. My linage is my Dad (Michael Joseph - wife Joan), my grandfather (Clement Joseph- wife Gertrude), great grandfather Michael (wife Johanna), great great grandfather John (wife Mary). I know John and Mary migrated on the Charles Kerr and landed in Sydney Australia on 8/1/1839. They lost one daughter Ellen on the voyage. A new son Thomas was born in 1841. A bit of history hear which I obtained from the Kurrajong Historical website's newsletter: - In about 1831, Thomas Higgins (Mary's brother) donated 2 acres of Portion 161 to the Church of England. This was on the corner of Bells Line of Road and Hermitage Rd and it became the first denominational church and school in the Kurrajong Brush. Thomas Higgins also owned several other properties. He willed the farm Portion 161 together with 3 cows in calf, a black horse “Captain” and a cart and harness at Kurrajong to his sister Mary McMahon in 1839.By then the estate was valued at one hundred pounds. John and Mary McMahon who were free settlers sailed on the “Charles Kerr” from Limerick, Ireland on September 15, 1838 and arrived in Sydney on January 8, 1839. They originally settled on Portion 161 near the creek close to Mill Road. With the formation of Bells Line of Road they moved up beside the road and built a small slab house called Luckenough. John and Mary McMahon’s eldest daughter (Mary) stayed on at Luckenough. John and Mary’s youngest son Thomas moved onto 100 acres at “Dural View” on Comleroy Road.
I also know that John's parents were John McMahon (a blacksmith) and Ellen Byrne. From what I have found out John may have been an only child. Nothing further back than that though. The family originated from Rathkeale, Limerick.