By the way, Holstein House-I searched in Melbourne Argus, and found that in 1915, it was the home of the speaker of the Victorian Legislative Assembly, Francis Conway Stone, from Inniskillen, Ireland.
This is the entry: Argus, Tuesday 22 June 1915, page 1
MASON. - On the 19th June, at his residence, "Holstein
House," 50 Murphy Street, South Yarra, Hon. Francis Conway, beloved husband of H.Emelie, and fourth son of John and Anne Conway Mason, Inniskillen, County Fermanagh, Ireland, in his 72nd year. R.I.P.
So Holstein House, the former home of John Stone and and his family was sold to another Irish man and a one in politics as well!
Tom