I had no idea!
I know he had some kids with his wife Joan Woodward. I thought she was his only one.
He was married for nine years the first time and had two daughters and a son by his first wife.
Woodward was his second wife and they celebrated their fiftieth anniversary this year. He had three more daughters with Woodward.
Seems to me that there ought to be a kind of "statute of limitations" there -- like after you've been married to someone for fifty years, they are referred to as your "only wife/husband".