Looking for George Houston Born 6 5 1874 to Neil Houston Sarah Houston Baker IN South East South Australia

George went to Western Australia during the goldrush with his Brother Donald, whom we have found buried at Kalgoorlie. George was mentioned in his Mother's obit. in 1912 but was not listed in Donald's obit in 1927. We know nothing about his - did he marry - have children etc.?
Would love to receive any info if anyone knows anything on my elusive Great Uncle.
Would also be happy to receive any info on Donald who worked all his life in WA in the mining industry.