He worked in the trenches for years with his wife but only became widely known due to Seinfield. Ill bet he was on Ed Sullivan with wife Anne Meara, more than a few times.
They were known as Stiller and Meara, a comedy act.
https://en.wikipedia.org/wiki/Stiller_and_Meara
One of my colleagues met Anne Meara once in a New York restaurant. Said she was an extremely gracious lady. Jerry Stiller was a very talented actor who will always be remembered for giving Festivus to the world. RIP.