It seems Victor was known as Ernest? From NLA Trove.
The Argus, Thursday 13 February 1930
HANSEN.-On the 12th February, 1930 (suddenly), at Murrumbeena, Berend, dearly beloved husband of Matilda Hansen, of Parkview, Murrumbeena road, Murrumbeena, and loving Father of Annie (Mrs. Lambert), Florrie (Mrs. Pelling), Ester (Mrs. Laurltz), Fred, Greta (Mrs. Middleton), Elsie (Mrs. Dunn), Alice (Mrs. Barnett), Ernest, and Joyce, aged 84 years.
HANSEN --On the 12th February (suddenly), at Murrumbeena, the beloved father of Annie, Florrie, Esther, Fred, Greta, Elsie, Alice, Ernest, and Joyce.
One of God's truest men called home. -(Inserted by his family.)
The Argus, Monday 2 December 1912
MIDDLETON—HANSEN.—On the 30th October, at St. Peter's Church, Murrumbeena, Victoria, by the Rev. W. A. Phillips, John Gilchrist, only son of the late Alexander Taylor Middleton, Glasgow, N.B., to Greta Matilda, fourth daughter of Berend Hansen, Murrumbeena. Home papers please copy.
The Argus, Saturday 6 July 1918
DUNN-HANSEN.-On the 5th June, at St. Peter's,
Murrumbeena, by the Rev. W. Green, Charles Hunter, eldest son of Mr. and Mrs. Chas. Dunn, Belgrave, to Elsie Victoria, fifth daughter of Mr. and Mrs. Berend Hansen, Murrumbeena. Present address, "Oban," Anzac street, Murrum- beena.
The Argus, Monday 23 August 1948
HANSEN. —On August 21, at his residence, 20 Oakdene cresent, Murrumbeena, Frederick William, loved son of the late Berend and Matilda Hansen, loving brother of Ann (deceased), Florence, Ester, Greta, Elsie, Alice, Ernest, and Joyce.
Elaine Grace was born 25th July 1929; their only child. Her mother Gracie Evelyn died 13th Nov 1943, at 30 Oakdene Cres, Murrumbeena, aged only 42. You are unlikely to find any info about Elaine Grace unless you are lucky enough for a direct descendant to come across your post! Fingers crossed!