Nicholas (John) TREWEEK bp Cornwall m 1881 Mary Jane WALLIS bp Ballarat [Vic 4016] Possibly Mary Jane WALLIS b 1862 Ballarat d/o Robert/Jane ROBERTS [Vic 232]
Mabel Beatrice Alice TREWEEK b 1884 Sebastopol d/o Nicholas John/Mary Jane WALLACE [Vic 20482]
Mabel Beatrice TREWEEK bp Sebastopol m 1906 Alfred Ernest BENNETT bp Hawthorn [Vic 529]
Daisy Mary Jane TREWEAK b 1888 Sebastopol d/o Nicholas John/Mary Jane WALLIS [Vic 33287]
Daisy Mary Jane TREWEEK d 1888 aged 19 days, Sebastopol d/o Nicholas John/Mary Jane WALLIS [Vic 15544]
Daisy Jane Mary TREWEEK age 14 days, Albert Street, Sebastopol, bur 31 Oct 1888 Ballarat Old Cemetery [Block D, Section 4, Grave 28, Row 1]

TREWEEK families in other parts of Victoria

Joseph William TREWEEK bp Cornwall m 1882 Mary TULK bp Fitzroy [Vic 3663]
Clifford William TREWEEK b 1883 Richmond s/o Joseph William/Mary TULK [Vic 11725]
Elsie Uren TREWEEK b 1884 Richmond d/o Joseph William/Mary TULK [Vic 27140]
Leslie Joseph TREWEEK b 1888 Clif(ton Hill) s/o Joseph William/Mary TULK [Vic 17035]

Thomas TREEWICK (b abt 1809) d 1864 aged 55 yrs, bp England, parents unknown [Vic 5691]

James Manderson TREWEEK d 1857 aged 29 yrs, bp Cornwall, father unknown [Vic 3781] (b abt 1828)
Emma TREWEEK b 1855 Richmond d/o James/Sophia TOMS [Vic 10194] Emma Revel (Reville) TREWEEK m J-D 1873 Thomas NORRIS [Vic 4910] This couple had 8 chn born 1874-87 at Kyneton, Loddon, Castlemaine and Kensington.
Sophia Anne TREWEEK remarried 1858 Henry HOLMAN [Vic 3619] This couple had several children born Campbells Creek, Sanhurst, Inglewood, The Loddon.

George Manderson TREWEEKE bp Cornwall m Louisa Kathleen Sus(an) SMITH bp Launceston [Vic 2509]

Captain Walter TREWEEK arrived Melbourne, Victoria, Australia in March 1857 on the Sardinian. Also on board were James John TREWEEK aged 20 and Maria TREWEEK aged 19 yrs

Francis TREWEEK bp Cornwall m 1871 Elizabeth ROSEWALL bp - [Vic 727]

Joel TREWEEK (b abt 1806) d 1873 aged 67 yrs bp Cornwall s/o Thomas/Peggy HANCOCK [Vic 9191]

There is a gravestone for Joel TREWEEK buried in Gwennap Churchyard who died 30 May 1858 aged 52 yrs. Elizabeth, wife of the above who died 17 Jul 1862 also aged 52 yrs. Joel, son of the above who died ... 1868 aged 29 yrs. Anna Maria, daughter of the above who died ... 1877 aged 35 yrs.

South Australia
Melora TREEWEEK b 1811 Tavistock, Devon. Melora TREEWEEK and 3 chn arr 21 Mar 1849 Port Adelaide SA on the ship Pakenham
Passenger list for Pakenham 1849 by Robert Janmaat at The Ships List 1847-1886.
William TREWEEK b 1812 Kenwyn youngest child of John TREWEEK and Ann (KING) Other chn of this couple born at St Ewe: Ann, John, Elizabeth, Mary, Joseph, Alice and Marie.
William TREWEEK m 24 Aug 1833 St Austell, Cornwall, England, Melora BRAY. Their chn: William Jnr chr 25 May 1834 St Austell Cornwall, Mary chr 4 Oct 1835 St Austell Cornwall, John b abt 1837, Eliza b abt 1839 and Samuel (b abt 1843 Cornwall). This family is shown as TREWEEKS in the 1841 British Census in the District of Redruth, Sub-District of Illogan: William 30, Meloria 30, William 8, John 4, Eliza 2. Also in the household is: William GROSE 27, Hambley PRICH 24, John BRAY 21, James BRAY 19 and Elize BRAY 18. [Cheryl Chandler from OPC]
Samuel TREWEEK d 26 Sep 1927 aged 84 yrs Modbury SA, bur Hay Valley, m 1 Jan 1866 St James Church, Blakiston, SA, Prudence NICHOLLS (b abt 1844 d/o Richard), d 18 Jan 1907 aged 63 yrs Fullarton SA, bur Hay Valley. Their chn: 1. John Thomas Nicholls b 1867 Nairne [SA Bk/Pg 57/394], 2. Mary Jane b 1869 Nairne [SA Bk/Pg 74/523], 3. William Henry b 1872 Nairne [SA Bk/Pg 108/259], 4. Sam b 1875 Nairne [SA Bk/Pg 147/169], 5. Melora Prudence TREWEEK b 1877 Nairne [SA Bk/Pg 191/162], 6. Richard Nicholls b 1878 Nairne [SA Bk/Pg 212/376], 7. Ada May b 1880 Nairne [SA Bk/Pg 253/21]. (descendant of Samuel is Basil Gum)
Melora's husband William TREWEEK died on the voyage from the outbreak of measles and she re-married Robert GERRISH (GARISH) who was supposed to have also been on the Pakenham (although his name is not listed as a passenger). There is a marriage of Robert GARISH in 1849 Adelaide to Lerce WHEAT [SA Bk/Pg 65/185] but no chn found. Robert and Melora settled at Gillies Plains and Enfield, then Hay Valley near Nairn SA, then finally to WA.
Robert Hayward GERRISH chr 18 Jan 1818 Broughton Gifford, Wiltshire, England s/o Thomas GERRISH/Mary. Their son, also named Robert GARISH, was born 1853 Adelaide s/o Robert GARISH and Eleonora (transcription error) BRAY [SA Bk/Pg 4/252] and died in 1854 Adelaide s/o Robert and Meliora GARISH [SA Bk/Pg 151/398]. Meliora GARISH died 5 Jan 1886 Adelaide [SA Bk/Pg 151/398] and is buried in West Terrace Cemetery, Adelaide. Robert GARRISH "was very devoted to her" and died 28 Dec 1887 aged 74 Nairne [SA Bk/Pg 168/59]. [Update from Cheryl Chandler, 1 Jun 2016, gr gr gr granddau of Melora TREWEEK and gr gr graddau of John TREWEEK (son of Melora)]

South Australia
Reported in the Burra Record Friday 17 Mar 1872
Mrs Mary Margaret TREWEEK and her twin daughters Laura and Eliza TREWEEK gave evidence at an inquest held Thursday 16 Mar 1872 before a jury of twelve. The verdict was that their house at Kooringa was wilfully destroyed by fire. Mrs Treweek's husband (unnamed) had bought the lease on the house for £8 [digitised newspapers - trove.nla.gov.au]

South Australia
Reported in the Burra Record Friday 26 Nov 1880. Local Court, Redruth, Wed 19 Nov 1880
John Antony TREWEEK, plaintiff, blacksmith, now of Kooringa and late of Hallet, had done work for the defendant and was attempting to recover the debt. In Feb 1878 TREWEEK was insolvent but had paid everybody and had had his books returned. Mentioned in the article was Mrs TREWEEK who was supplied with a pair of fowls and eggs. The verdict was for £1 6s 5d to be paid to the plaintiff. [digitised newspapers - trove.nla.gov.au]

Modbury District SA
Obituary of Samuel TREWEEK in the Register, 28 September 1927, page 15e [The Manning Index of South Australian History, State Library of SA

There are several other TREWEEK families which could be added.