Could a person with 1,782 cM actually be my half-sibling?

This person is listed as close family to me, yet I do not know them.

My cM is the same as this person's.

I do have 6 paternal half siblings however.


DNAPainter suggests several possible relationships for 1782cm shared DNA.

I suspect that some of them you can rule out immediately (grandparent, for example).

But yes, half-sibling is one of the possibilities.

  • Thank you! This person was adopted. Doesn't know anything about either parent but I suspect, since I know my bio dad's history, that I may have another sibling.
    – Deb Louk
    Feb 21 '20 at 20:22

Not the answer you're looking for? Browse other questions tagged or ask your own question.