Hi Kellie.
I just found out a bit of information about Robert who died in 1908, from relatives in Horsham, Daniel Macfarlane was married only once not twice,as I had been led to believe, that Robert was the result of a liason between Daniel and an Irish girl and that Daniel had only been married once, to Susan Ann Macfarlane, nee Mckie.
Then, all of Robert's brothers and sisters were his half brothers and sisters