Actress Liz Sheridan has passed away. She died of natural causes in the early hours of Friday morning, reports TMZ. Sheridan had turned 93 years old just a few days prior.

Liz Sheridan from Seinfeld and ALF has died

Liz Sheridan was born in New York in 1929 and was a dancer and singer in addition to her acting work. Her screen career began in the 1970s with an appearance on Kojak.

But Sheridan was best known for her roles on two classic sitcoms. She played the neighbour "Mrs. Ochmonek" on ALF from 1986 to 1990.

Then from 1990 to 1998, she starred on Seinfeld as "Helen," the mother of Jerry Seinfeld. Sadly, her death follows that of co-star Estelle Harris, who passed just 13 days earlier. All four of the main Seinfeld "parents" have now died.

Liz Sheridan and Barney Martin from Seinfeld

Liz Sheridan's TV credits also include episodes of The A-Team, Murder, She Wrote, St. Elsewhere, and Who's the Boss?, to name just a few.

Also interesting:

Sheridan was last seen in the 2010 movie Trim, and appeared in Andy Griffith's final film Play the Game the year before.

She celebrated her 93rd birthday five days before she passed. May she rest in peace.