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Ancestral Family Tree DNA Testing / Thrulines suggesting half-sibling relationship
« on: Wednesday 15 December 21 00:07 GMT (UK) »
Hello, attached is a suggested relationship between myself and a DNA match - we share Susannah as a 3xgreat grandmother.
(The DNA match's tree ends at Mary while mine goes back further to Susannah and beyond)
Thrulines is suggesting that my ancestor Robert and his sister Mary were half-siblings. Is this based on the fact that our shared DNA is less than would be expected for two people sharing a 3xgreat grandparent, with the same number of generations between?
I have suspected Robert and Mary were not full siblings, should I take this as the best evidence I'm likely to get?
Thanks for any guidance
(The DNA match's tree ends at Mary while mine goes back further to Susannah and beyond)
Thrulines is suggesting that my ancestor Robert and his sister Mary were half-siblings. Is this based on the fact that our shared DNA is less than would be expected for two people sharing a 3xgreat grandparent, with the same number of generations between?
I have suspected Robert and Mary were not full siblings, should I take this as the best evidence I'm likely to get?
Thanks for any guidance