The veteran actress was also known for playing the nosy neighbor Mrs. Ochmonek on ALF.
Her longtime friend and representative Amanda Hendon confirmed the news to EW.
Sheridan detailed their romance in her 2000 memoirDizzy & Jimmy: My Life With James Dean.
Liz Sheridan on ‘Seinfeld’.Everett Collection
But her biggest spotlight came playingJerry Seinfeld’s doting mom, Helen, on his titular sitcom.
She was the only cast member aside from the four leads to show up at least once every season.
Sheridan and Harris were the last survivingSeinfeldparent actors.
Every time she came on our show it was the coziest feeling for me.
So lucky to have known her."
