Hello bluerooster
Many thank for posting about your link to the ROSSITER family in Tasmania.
I am not directly related to that family, and was helping someone else with their research, so most of what I know is included in the thread you have posted to.
I can tell you that your father William Buckley ROSSITER had a brother named Henry Wedge ROSSITER who was born in 1912. Their father was also Henry Wedge ROSSITER who married Hilda May MARR (your grandmother) in 1911 in Hobart. Here is the marriage announcement from the Hobart Mercury:
MARRIAGES
ROSSITER-MARR.-On May 15, at Holy Trinity Church Hobart, by the Rev. Canon Shoobridge, Henry Wedge, youngest son of the late Thomas James and Maryan Josephine Rossiter of Berwick, Victoria, to Hilda May (Dolly), second oldest daughter of Susan and the late John Thomas Henry Marr, of Hobart, Tasmania.
The Mercury Hobart, Wednesday 21 June 1911
Your grandfather Henry Wedge Rossiter had been born to Thomas James Rossiter and Maryan Josephine (nee O'Shea) who had married at St Andrew's Brighton, Victoria on 1 September 1854. Thomas James died at Molong in NSW in 1907, and Maryan Josephine at Cunnamulla in Queensland in 1891.
Thomas James was a son of Benjamin ROSSITER (1790-1858) and his wife Zillah (nee BAYNTON) - 1789-1871. They had been married in Kilmersdon, Somerset on 30 April 1818.
The first names Henry Wedge came from Thomas James's brother-in-law; Henry Wedge )1819-1866) who married Thomas James ROSSITER's sister, Mercy Baynton ROSSITER, also at St Andrew's Brighton, Victoria on 24 February 1852.
I hope this is of some interst to you.
Kind regards
Phil Candy
Toowoomba