Looking for Dickson OR Dixon Family of Bowens

I'm looking for my great great grandfather, his name is Jack I don't know if his last name is spelt
Dickson or Dixon. I was told he has 3 children's and their names are Estelle, Joan , and John, he also
has a stepson and his name is Walter. Their was a woman who's name is Lydia Dickson or Dixon I'm not sure
if she was the wife of Jack. Jack also has other children that lives in Halls Creek WA , he lived in Collinsville and
Summerville is what I can gather.