Fans of Leave It to Beaver and classic television are mourning the loss of a familiar face whose work quietly shaped a generation of childhood memories.

John Eimen — the red-haired, freckle-faced young actor who appeared in some of the most beloved shows of the 1950s and 1960s — has passed away at 76.

Eimen died Friday at his home in Mukilteo, Washington, after being diagnosed with prostate cancer in September, his family shared with The Hollywood Reporter.Born in Chicago in 1949, Eimen’s journey into Hollywood truly began by chance. After his family relocated to Los Angeles, a talent agent visited his first-grade classroom and immediately noticed the bright-haired 6-year-old. As he once joked on The Jeff Dwoskin Show,

“At that time, I had bright, ridiculously bright red hair and the freckles … a real all-American boy-type kid.”