Sean M. O'Leary, 46, of Wescosville, died peacefully December 29, 2025 in his residence.   He was the husband of Rebecca E. (Hauze) O'Leary.  Born in Islip, NY, he was the son of Donald F. O'Leary and the late Florence A. (Russell) O'Leary.  Sean honorably served his country in the Navy during Operation Enduring Freedom and Operation Iraqi Freedom.   He worked for Lithium Technology Corporation, Cigars International, and was the receptionist at the Allentown Art Museum since 2018.  Sean was an avid visual artist, enjoying sketching and painting and was a member of the Lehigh Valley Photographers Club.  He authored 3 books under the penname, Sullivan Hardgrave, publishing "The Chloe Stewart Novels".

Sean is survived by his wife of 7 years, Rebecca; father and stepmother, Donald and Barbara O'Leary; brothers, Daniel P. O'Leary, Patrick E. O'Leary and wife Samantha, and Joseph F. O'Leary and wife Megan; beloved cat, Tropicana.

A celebration of Sean's life with military honors will be held on Sat., Jan. 10, 2026 at 1:00 PM in Schantz Funeral Home, P.C., 250 Main St., Emmaus.  Visitation 12:00 Noon to 1:00 PM in the funeral home.

In lieu of flowers, contributions may be made to the Allentown Art Museum, 31 North 5th Street, Allentown, PA 18101.