Jonathan S. Kneller, 41, died Sunday, March 12, 2017 at Lehigh Valley Hospital - Cedar Crest. Born in West Rockhill Township, he was the son of Barbara (Haase) Dempsey of Quakertown and the late Willard S. Kneller. Jon was a fun-loving and outgoing guy who was always smiling, and he was a prankster who loved a good joke. He is best known for his saying, "I'm not here for a long time - I'm here for a good time." Surviving in addition to his mother are his children: twin boys Chase and Chance; son Dillon and daughter Julianna; a sister, Krista Kneller (Frank Fischer); nieces and nephew: Samantha, Robert and Jennifer; his step-father, Andrew Dempsey; maternal grandmother, Janet Haase; aunt and uncles: Sharon, Dale, David and Charlie; and a special friend, Emily Gruver. Services will be private.