Gadget makes important point re his mum.
Some years ago our local fh group were asked to help find an ancestor who was believed to have non European heritage, due to photo 'proof'. We found the photos ,,,, sepia,,,,, and we found a nee surname .... Blackall. The enquirer then searched through an out building and located the pastoral books and the full names of the employees along with their ships of arrival to the colony of NSW, Australia. This was pre DNA kits advertised as a tool for family historu buffs. I recall that enquirer saying 'Blackall , All Black, slip of tongue '
JM