Hi - My great/great grandfather was Adolph Sophus Carl Voigt - who died on 6/7/1937 in Perth.Think he was born in 1872, not sure where?but fairly sure he came from Melbourne way??, after emigrating??,may be he is somehow related to some of the people named in your posting.
I am keen to learn anything of his background / origin etc.
My father say he had a German accent, and he thought that a place named Sledge-wick Holstien (please excuse spelling)in Denmark, maybe now part of Germany had some connection??