Helen L. Byrne (nee Dugan), of Levittown, died on Aug. 15, 2007. She was an original Levittown homeowner (58 years) and was retired from NUMC (30 years). Wife of the late John J. Mother of John J. Jr., Mary Ellen Centrone, the late Helen L. and the late Barbara Byrne Demick. Grandmother of Christopher (Alisa), Stephanie, Stephen (Katie) and Colin. The family was cared for by the Thomas F. Dalton Funeral Home, Levittown Chapel. Mass at Holy Family RC Church. Interment Holy Rood Cemetery.