The TV father of Richie Cunningham in Happy Days, Mr. Tom Bosley has died at the age of 83.

Mr. Bosley died Tuesday in his Palm Springs, Calif., home. The actor died of a staph infection, according to TMZ, which first reported his death.

Before finding fame on the small screene, Bosley won a Tony for starring as the beloved New York City Mayor Fiorello LaGuardia in the Pulitzer-Prize-winning 1959 musical Fiorello!. He also made a memorable mark in the 1964 Peter Sellers cult comedy The World of Henry Orient, as the too-understanding husband of Angela Lansbury’s character.

After Happy Days, he would frequently costar with Lansbury on her CBS series, Murder She Wrote.

Condolences and prayers to Mr. Bosley’s family and friends.

Reacting to Bosley’s death, his Happy Days costar Henry Winkler expressed his sadness, telling Los Angeles’s KNX-1070 News Radio, “I’m in shock, I really am. I spoke to him just a few weeks ago and he seemed to be getting his strength back.”

On Oct. 1 he had turned 83.