Thankyou Annette and Gadget for your input.
Annette, I saw the 1819 birth with parents John & Christian thought it would make Angus too young to marry in 1836 ?

Unfortunately Angus & Mary had no sons or other children born in Australia. To help with naming patterns.
Angus died in 1890 and his death notice gives his age as 81yrs so consistent with the birth age abt 1810 ?
Kerri