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Jack Daniel Osojnak, 91

Summary by RiverheadLOCAL
Jack Daniel Osojnak of Riverhead died on Nov. 7, 2025, at home. He was 91 years old. Jack was born on July 17, 1934, in Manhattan, to Joseph Osojnak and Mary Sadlon. He earned an associate’s degree and worked as a lettering artist at Ad Agency Headliners. He is survived by his wife Frances, his sons Daniel (Veronica Nicastro), Steven (Marion), Darryl and David. Source
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RiverheadLOCAL broke the news in on Monday, November 10, 2025.
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