How can I find out if my grandparents had children?

Question

Anonymous Practitioner · Accepted Answer

Get a paternity/DNA test. If you are their biologocal grandchild then those tests will be able to tell you with high confidence, and it will be almost certain they had children. If not then they may have other children that are not one of your parents, but this will be much harder to determine and will involve methodology too complex for this forum.

“How can I find out if my grandparents had children?”