They came by the 'Neptune' as Self-funded and as Bounty Immigrants in 1841

Neptune

The Recapitulation is very neat - graphs trades and sex/status/age
Families have 3 Smiths, 3 Shepherds, 3 Carpenters and 28 Agricultural Labourers, equal numbers of male and female adults.
Children are grouped in their father's trade, 1 aged 15-18, 7m and 4f aged 7-15, 6m and 7f aged 1-7, 1m and 4f under a year, 104 souls, 1596 pounds Bounty
76 Single men - 67 agricultural labourers, 3 carpenters and 6 shepherds total 1444 pounds bounty
73 single women - 8 Dairymaids, 53 Housemaids, 7 Laundresses and 5 nurses - 1387 pounds Bounty
87 Protestants and 166 Roman Catholics, total 253. These figures do not include the other 57 names on the Victorian list.
Staff included - Doctor John Brown, Crew 1st Mate Thomas Cresey, 2nd Mate Alexander Mackay, 3rd Mate TJ Duggan.

Port Phillip Herald 9 Apr 1841 reports the Cargo included a Durham bull aged 18 months which was sold for 120 pounds, The imported cow was bought in by the owners for 6 pounds 10 shillings

Mr James Salter respectable jeweller, happily married and the father of ten fine children - perhaps had taken one last look at his fine home on the Grand Parade. He would say farewell to his friends, gathering his wife and children to head with along with all their worldly goods to the docks to leave their homeland for the last time.
Also leaving their homes for the last time were Mr George Stannard a cabinet maker, his wife and family of Hammonds Marsh, and Mr John Wilkinson, his wife and their four children formerly of Daunt's Square. Along with other Irish Wesleyan families these hopeful settlers looked forward to their new lives in a new land called New Zealand.
The Neptune arrived in Sydney Harbour on 14th April 1841 with 300 emigrants all noted to be in good health by the Sydney Gazette & New South Wales Advertiser 15th April 1841 these families amongst them. In Sydney the families prepared for the final journey to New Zealand and this is where the discrepancies in the story of their journey begins.

Steerage Passengers:
Mr James & Mrs Salter & ten children (*James Salter Jnr a son had been left behind in Sydney) Mr John Wilkinson & 4 Children
Mrs Susannah Stuart Wilkinson nee Stuart died on board the Neptune from a burst blood vessel in port at Sydney 1841 (Wilkinson Family Bible)
Mrs Stewart & 2 Children
Stephen Ellis - James Salter Snr's servant