For George Henderson we have him on his son's marriage cert as Prof of Music, marriage took place at the Methodist church Bendigo, son was Theophilus, so with George being a Prof of Music would cover the information of him being a piano laborer/apprentice in his early london days, since I could not find (too lazy really) his birth or other family in London, the "Wexford" details came up as good for me. They lived 13 yrs in Adelaide and then to Victoria, he could not have taught music in Bendigo as there was and still is not a facility for music as would be in Melbourne, with that I gather he would have taught music in at least one of the Melbourne facilities.