We found out about a decade after grandma died that her age may have been off by a few years. She lived in a remote place and a few of the siblings all got thei

We found out about a decade after grandma died that her age may have been off by a few years. She lived in a remote place and a few of the siblings all got their birth certificates in batches on rare (once every few years) visits to a city with a records office. I can't remember what tipped them off about being wrong but I think a few were officially born far to close together.