LEONARD - Jack M. "John" Of West Seneca, NY, April 5, 2024. Beloved husband of the late Joan C. (Chapple) Leonard; dearest father of Donald J. (Rosalie) Leonard and the late Robert J. Leonard; survived by seven grandchildren and five great-grandchildren; loving son of the late Harold and Ann K. (Fulton) Leonard; brother of the late Thomas (Susan) Leonard and Daniel Leonard; also survived by many nieces and nephews. Mr. Leonard was a U.S. Army veteran. No prior visitation. Arrangements by: CASTIGLIA FUNERAL HOME, INC., 873 Abbott Rd., South Buffalo, NY, (716) 824-6435. Please share your condolences at: www.castigliafuneralhome.com