Ken Weatherwax — who, as a child, played Pugsley on “The Addams Family” TV show — died at his home Sunday in California after having a heart attack, TMZ reports. He was 59.

According to IMDb, “Ken Weatherwax was born on Sept. 29, 1955, in Los Angeles, Calif., as Kenneth Patrick Weatherwax. He is an actor, known for ‘The Addams Family’ (1964), ‘The Addams Family’ (1973) and ‘Halloween with the New Addams Family’ (1977).”

IMDb notes that Weatherwax’s aunt was Ruby Keeler, the popular actress of movie musicals in the 1930s.

IMDb also says that for most of the 1990s Weatherwax had “been working as a set builder on movie lots.”

A card from an Addams Family game based on the original TV series, which ran on ABC from 1964 to 1966.

Below is a clip from the first episode of the series that we found on YouTube: