The Ancestry tree I was referring to can be found at:http://trees.ancestry.co.uk/tree/10565276/person/-543791208
but note that she does not have Samuel included. Unfortunately this tree has little information than you do not already have. The christening for Amelia is also incorrect!
The baptism you have found for Samuel at Great Crosshall Street Chapel would seem to be the correct one. There are also baptisms for
siblings Ann (born 10 Oct 1826; bap 14 Oct 1826); William (born 20 Feb 1829; bap 12 Apr 1829); Sarah Jane (born 19 Feb 1832; bap 8 Apr
1832); David (bap 10 Jul 1836).
These records also suggest two other children who may have died in infancy:
- John Williams, born 28 Mar 1824, bap 9 Jan 1825, s/o William Williams & Sarah Roberts (or is this actually Lewis???)
- David Williams, born 19 Feb 1832, bap 8 Apr 1932, s/o William Williams & Sarah Roberts (He would have to be a twin of Sarah Jane?)
Nothing for Amelia, suggesting that she was born actually born in 1838? (The Great Crosshall Chapel records stop at 1837).
I can't find a marriage for Samuel in NSW in 1869? Who did he marry? There is one in Victoria which might fit?