"I believe that the actors mentioned aren't baby boomers."
I'm certain you are correct. It seems I recall the baby boomer generation ended about 1963.
I just found this on Google search:
So What's a Boomer, Anyhow?
Glad you asked. Stated very simply, the sociologists and the media define baby boomers as those born between (and including) 1946 and 1964.