Both died just a few weeks apart. Both were 93. 93 is a good run RIP funny lady's!
Liz Sheridan Dead: Jerry's Mom on 'Seinfeld' Was 93 - Variety
Estelle Harris Dead: Mrs. Costanza on ‘Seinfeld’ Was 93 – The Hollywood Reporter
Liz Sheridan Dead: Jerry's Mom on 'Seinfeld' Was 93 - Variety
Estelle Harris Dead: Mrs. Costanza on ‘Seinfeld’ Was 93 – The Hollywood Reporter