Being brought up by Barnardo's, I never knew my parents. I now am in contact with a half sibling and we have both taken dna tests.Will the shared matches we have be on our mothers side. Am I right in thinking that if I go back to GGG parent or however far back I need to go, I then have to find all the siblings of ggg parent and research them forward. If yes do I do just the maternal side or both male and female.
Many thanks.