Fr T.J. Linane, From Abel to Zundolovich, Vol. 2: Biographies of Priests on the Australian Scene up to 1900, 1980, pp 12-13:

Cahill, Thomas J., Irish, Golden Jubilarian
Builder of a Church out of his Own Pocket
He was a brother of John Joseph and 'Big Bill of Binalong'. The Cahills contributed five in the family to Australian missionary work: three priests and two Sisters of Mercy, Sister Gertrude who taught for many years in Bourke and Sister Mary Xavier of Sans Souci Convent. The latter is still hale and hearty, able to wield a facile pen that has conveyed most of the information about Thomas J. to her friend, Monsignor Cummins. T.J. studied for the priesthood at Mount Melleray and Maynooth, being ordained for the Diocese of Waterford. Coming to the poorly-manned Diocese of Wilcannia-Forbes Diocese in 1889, under its first Bishop, Dr. John Dunne, T.J. gave good service in Broken Hill and other places, none of them glamourous. His health broke down in the late 90s and so the Directory shows 'absent on leave' in 1899. Making a fair recovery he transferred to the Wellington Diocese, N.Z., in 1902 or earlier, giving service in turn at Carterton , Dannevirke, Waipawa, Patea and Feilding. His surviving sister, Sister M. Xavier of Sans Souci Convent, takes up the story of his career as from the 1920s: "His health broke down in New Zealand after he had built a glorious church at Feilding that his parishioners called The Beautiful'. After returning home he volunteered for the English Mission and became priest-in-charge of the church at Topsham, Devonshire. There had never been a church there and Father Tom built one out of his own pocket. He was a good financier. While in New Zealand he bought shares in the Farmer's Association. The proceeds were given to the Sisters at Bourke to enable them to start a House at Blackheath in the Blue Mountains. The shares yielded something like £60 a year and were made payable to the ruling Superior. He died happily and holily at Topsham at the age of 89...'. (and so continues the account of her priest brothers by one who has celebrated the 70th anniversary of her Religious Profession).
(Footprints, Vol. 2, No. 1)
Ref.: MDHC File, Torquay per Late Monsignor V. Cummins, Broken Hill, and Sister M. Xavier R.S.M. Sans Souci Convent.