Hiya New York,
Audrey of no surname at the moment other her married one of McKee was probably born in the 1940s. I'd say 1946 or earlier. We don't know his dad's Christian name nor do we know where the McKee family lived when Michael was born. We know Audrey married his dad sometime in the sixties.
I've a little more info. It may be no use but am sending a PM
All the Best Chris