For those with comprehension problems...
I never said the use of the word in that context was incorrect, just that I'd never heard it used in that context before. Prior to this thread, I'd only ever heard the word used in the grammatical context. When it comes to references to people, it's far more common to use the words parent, grandparents, great grandparents and/or ancestors.
Just an observation, mildly humorous to perhaps only me.
I didn't mean to kick sand in all your vaginas, that was just a bonus.