Timothy Seldes was born on 16 December 1926 in Manhattan, New York, USA. He was married to Susan Richards Shreve, Karen and Aileen Patterson. He died on 5 December 2015 in Washington, District of Columbia, USA.
Raised in New York City and a graduate of UCLA, Seldes grew up around words, ideas and the performing arts. He was the brother of Tony-winning actress Marian Seldes, son of drama critic and author Gilbert Seldes and nephew of pioneering press critic George Seldes.