Have checked witnesses, no relation. I have had no luck finding anything on the parents or them arriving on a boat, way to many Wilsons arriving in that time frame in New Zealand. Also way to many Ellen/Helen/Eleanor marry John/Jack Wilsons to even have a guess at buying the correct one. Have no idea on other siblings. Did the census and the first one available shows him married and living with his wife, no others residing with them. Checked all censuses and never any older people with him, as sometimes they more in when one parent dies. But no luck he was also dead at 60 , had two wives, the second wife was half sister to the first wife. I have access to ancestry, but have very little on Northumberland on line. Did subscribe to family past for month but no luck like you said. Unless sym is incorrect, people did change names on travelling to leave ex hubby or something behind.