Joseph TONKIN was baptised on 29 May 1831 in St Buryan, Cornwall. Son of James TONKIN & Nancy (Ann) HUTCHENS. He married Elizabeth Jane WEYMOUTH at St Jame's Church in Blakiston, South Australia, 27 September 1854. They had thirteen children.

1. James Charles b.1855 Inverbrackie, South Australia.
2. Joseph Henry b.1856 Bayswater, South Australia.
3. Ephraim Weymouth b.1858 Woodside, South Australia.
4. William Garland b.1859 Woodside.
5. Anna Eliza Shepherd b.1861 Inverbrackie.
6. Elizabeth Jane b.1862 Inverbrackie.
7. Mahale b.1865 Woodside.
8. Prectiers Adelaide b.1866 Port Victor, South Australia.
9. Agnes b.1868 Port Victor. (Now called Victor Harbor)
10. Clara b.1871 Port Victor.
11. Thurza b.1872 Port Victor.
12. Fanny b.1875 Port Victor.
13. George b.1876 Port Victor.