JOHNSTON/STEWART/WARNOCK families of Belfast

Searching for more information about John JOHNSTON of Belfast and his wives' families. John was born c. 1821 to Willam JOHNSTON and Sarah GORDON. His first wife was Ann or Agnes STEWART, aged 19, to whom he was married for 19 years. So far have not been able to find their date and place of marriage or details of Ann  or Agnes's death and burial. They had a number of children: Jane b. 1841, Sarah, William, b.c. 1844, James b.c. 1846, and possibly, Letitia, b. c. 1848.  John's second wife was Letitia WARNOCK (b. 1821 Ireland) who he married on 8 January 1852 at St Anne's Church of Ireland, Belfast. John was a 32-year old sailor and widower. Letitia was a spinster also aged 32. Her father was John WARNOCK, a carpenter. A family of JOHNSTONs that could be them arrived at Port Phillip, Melbourne, Australia on the Mooresfort on 13 January 1854. The members of the family were John JOHNSTON, 33; Letitia JOHNSTON 33; Jane JOHNSTON 12; William JOHNSTON 8; James JOHNSTON aged 6 and Letitia JOHNSTON aged 4. Also on the same ship were Sarah JOHNSTON 26; Joseph or Josuha JOHNSTON 25; and Josh JOHNSTON aged 1. (Index to Unassistd Passenger Lists to Victoria 1852–1923). John and Letitia had at least two children: Warnock, possibly born and died in Ireland and Thomas b.c. 1859 in Victoria. (He was 38 when his father died). John JOHNSTON died aged 77 on 29 December 1897 at Bendigo, Victoria. Buried at White Hills Cemetery, Bendigo. VIC BDM Death 13428/1897). John is buried in a plot with Daniel JOHNSTON who was one of his brothers.