Richard has one son, James, with his first wife Patricia Jones.
Richard was married and divorced four different times to four different women.
He won two Emmys for Outstanding Actor in a Comedy Series, one for "Soap" and the other for "Empty Nest".
He was cremated with no memorial service held at his request.
He studied playwrighting at Columbia University.
He starred in Blake Edward's S.O.B. with Julie Andrews in 1981.
He is the brother of director Robert Mulligan.