Hi Philadelphia,
I don't know what happened to Samuel's father and step-mother. I looked everywhere a couple of days ago, to find their deaths in Australia, but no luck. I only have this info, from the obituary, about Samuel....
His obituary, published 22 August 1949.
http://trove.nla.gov.au/ndp/del/article/185971877?searchTerm... Thomas pinney"&searchLimits=
Martha's marriage certificate, will help out hopefully.
OK, Martha married 1881, and Samuel (her possible brother) married 1886.
So, if the word "Deceased" was not showing for the parents on the 1886 marriage certificate, then it probably won't be showing on the 1881 marriage certificate.
Anyway, she may have been a few months under-age, and needed permission to marry.
Let us know when the certificate arrives, if extra details, are forthcoming.
Mary