Hi John,
This is my first try at Family research.
I cant help with Samuel Hood much except to tell you what my 86 year old dad Max Hood has anecdotally told us about him often over the years.
Dad tells the story of Sam being the Sales person at their foundry in England. Fred his brother ran the foundry.
Dad thinks the foundry was called Hood something

and he and mum went there when in the UK to find it was blown up in WW2
Sam would go to Paris all the time to sell the Iron Lace which they made. It was very popular and sold well over there but not so well in the UK. (it later became very popular in Australia. Hence the Australian connection)
Sam had a second family in France and when his English wife Elizabeth (nee Ryley) died he brought his French wife to the UK to look after the English children and blended all the children together. Dad always thought all the children were Sams.
John Riley Hood born 1839 or 1841. d. 1924 in Sydney
Samual Hood b. 1872 in Glenelg South Australia. d. 1953 in Sydney
Albert George Hood b. 1896 Newcastle NSW d. 1959 Tasmania
Maxwell George Hood b. 1923 Manly NSW
Me b. 1950 Sydney NSW
cheers Hoody