Eleanor MURRAY died in Dec 1881, not 1880. Her death reg was in 1881 (reg 11489); she died in Northcote, aged 58. Are you sure Wm died in 1890 (that death was in Ballarat)?
The Argus, Wednesday 14 December 1881
Friends of Mr. WILLIAM MURRAY are informed that the remains of his late beloved wife, Eleanor, will be interred in the Melbourne General Cemetery, on Thursday, 15th inst. The funeral to leave his residence, 3 Blackwood-street, Hotham, at half-past 3 p.m.
After their arrival, Wm & Eleanor had 3 more children, born in Melbourne:
Hannah 1859, d. 1860 aged 14 months
Samuel 1860, d. 1882 aged 21
Rebecca (b. London) married in 1881 to Hy BISHOP (reg 2756). They had the following children, all born in Seymour:
Ethel Emma 24/3/1882, m. Samuel KENYON 16/6/1909, d. 1939 East St Kilda aged 56
Amy 1883, d. 1883 aged 24 days
Ruby Lilian 1884, m. Jno Chas Christopher MARKMAN 17/6/1914, d. 1955 Warr aged 70
Hy Stanley 23/11/1887 (known as Stanley), d. 1949 Carnegie aged 59
Leslie/Lesley Gordon 16/9/1889, d. 1889 aged 3 months
Roy Wilton 16/9/1889 [twin of Les], d. 1890 aged 9 months
Cora Isabella 1891, m. Robt Jno GIBSON 16/9/1915, d. 1965 Armadale aged 74
Edna Doris 1897, m. Eric Coath JONES 15/11/1924, d. 1967 Northcote aged 72
From NLA Trove:
The Argus, Tuesday 4 July 1916, p.1
BISHOP.- On the 1st July, at his residence, Watson street, Seymour, Captain Henry Bishop, dearly beloved husband of the late R. Bishop, and father of Ada, Albert, George (W.A.), Mrs. T. J. Kenyon (Stratford), Mrs. J. Markman, Stanley (Ararat), Mrs. R. J. Gibson, and Edna, in his 73rd year. (Late Education department.)
The Argus, Monday 15 September 1919, p.1
BISHOP - On the 12th September, at her residence, "Marmoot", Watson street, Seymour, Ada Jane, eldest daughter of the late Captain Henry Bishop, and beloved sister of George, Mrs S. J. Kenyon, Mrs J. C. Markman, Stanley, Mrs R. J. Gibson and Edna.
The Argus, Saturday 11 March 1939, p.10
KENYON - On the 9th March, at private hospital, Melbourne, Ethel, beloved wife of the late Samuel Kenyon, loving mother of Gwenneth (Mrs Roberts, England). (Interred Sale 10th March 1939.)
KENYON - On the 9th March, passed peacefully away, Ethel, second eldest daughter of the late Henry and Rebecca Bishop of Seymour, loving sister of Ruby, Stanley, Cora, and Edna.
Henry (b. London) married in 1883 to Maria ROBINSON (reg 2741). They had a son named Hy in Melbourne in 1884.
Joseph (b. Hotham) married Emily EDSALL in 1887 (reg 1199).
Possible death for John in 1919 in Surrey Hills aged 70, son of Wm & Eleanor (reg 15145).
Rebecca's husband's first wife Jane (nee BROADBENT) was the mother of the older children mentioned in the notices above (older 3 born Melb, younger 2 in Seymour):
Ada Jane 1868
Albert Hy 1871
Annie Elizabeth 1873, d. 1875 aged 17 months
George Seymour 1876
Francis 1878, 1878 aged 4 months
The Argus, Saturday 16 March 1878
BISHOP -On the 12th inst, at Seymour, after a long and painful illness, Jane, the beloved wife of Henry Bishop, head teacher of the Seymour State School, aged 29 years.
They married in Victoria in 1868; he was born in Wiltshire, she in Norfolk. Her death reg states she was 49, not 29 - though 29 seems more likely - and born in Fife (reg 6383). His parents (from death reg 1916/12216) were Jeremiah BISHOP & Jane MAIDMENT; he was 72 when he died.