Thanks for the reminder JM, I sometimes forget about the Rootschat resources.
I'm trying to confirm a family story - yes, I know :-)
According to several sources, Margaret Cannan, nee Nelson, died in the Bendigo Benevolent Asylum in 1906, recording that she had 10 children, 4 illegitimate with Jeffrey James Keating and 5 with James Cannan whom she married in Melbourne on 31 December 1851. The will of the second child with James Cannan, Samuel Cannan who died in December 1890 , says he had 8 siblings:
"eight brothers and sisters, viz. William Kenton (half brother), Robert Cannon and six others whose names and addresses I have been unable to ascertain". That makes 9 descendants, plus James Cannan died 1856 aged 4.
George Percival Abbott Nelson seemed a likely candidate, especially since JJK abandoned her in Melbourne about 1848. I thought perhaps the first names might be a clue to his parentage.