And more, giving a bit more of his timeline.
http://cornishstory.com/2016/07/08/t...h-coincidence/
If you google "Josiah Holman" mine captain you get a number of hits, I haven't been through them all.
There is also a thread about him on RootsChat which gives details of his children and where they were born:
Elizabeth Simmons Holman born 21 December 1842 ( not very long after the marriage)
Emily Holman b 10 January 1844 died as an infant
John Henry Holman 12 October 1846
Emily Louisa Holman 15 November 1849 born in Brazil
Josiah Holman 10 October 1853
Charles William Holman Born Capetown ( my G Grandfather) 13 January 1857
Annie Holman Born New Zealand 2 Nov 1859