- Accidentally shot himself in the left ankle at age 12.
- Had his first marriage annulled because his mother disapproved of the union.
- Modeled famous "woo-woo-woo" sound on a similar gimmick used by comic Hugh Herbert
- Hated shaving his head because he thought it made him less appealing to women.
- His last film appearance, Hold That Lion, is the only Three Stooges short to co-star Curly along with his two brothers, Moe and Shemp.
- Was an avid dog lover, often picking up strays while the Stooges traveled and taking them with him from town to town.
- Jennie Horwitz — Mother
- Irving Horwitz — Brother
- Marilyn — Daughter
- Shemp Howard — Brother
- Janie — Daughter
- Moe Howard — Brother
- Marion Buxbaum — Ex-wife
- Julia Rosenthal — Ex-wife
- Solomon Horwitz — Father
- Elaine Ackerman — Ex-wife
- Valerie Newman — Wife
- Benjamin “Jack” Howard — Brother
Season 6, Episode 2
- Birth Name: Jerome Lester Horwitz
- Birth Place: Brooklyn, NY
- Birthday: October 22, 1903, Libra
- Died: January 18, 1952
- Profession: Actor
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