When were your father born is this question correct I was told there a grammar rule somewhere which says possible please help?

The question "Were your father born" is grammatically incorrect. Here's why:

The correct question is "When was your father born?"

Here's the breakdown of the grammatical error:

* Subject-verb agreement: The subject of the sentence is "father," which is singular. The verb should also be singular, "was," not "were."

* Tense: You are asking about a past event (his birth), so the past tense of "to be" is required.

There isn't a specific grammar rule that dictates this directly, but it's a combination of:

* Subject-verb agreement: The verb must match the number of the subject.

* Tense consistency: The tense of the verb should be appropriate for the time frame of the action or event being described.

Let me know if you have any more grammar questions!