I ran across a posting by Clara Pruden DeLap, on Genealogy.com,for John DeLap m. Anna Maria Yeatts,Adams Co, PA.
Adams County, Pa, tombstone at the Rock Chapel Methodist Church cemetery, a few miles north of Heidlersburg, Adams Co, PA. John DeLap d. 3 Mar 1879, age 55 yrs, 4 mos, 26 days. He is buried next to his father.
Adams Co. Historical Society Library info: John s/o Leonard DeLap & Elizabeth Sunday; s/o John DeLap & Catherine Leas; s/o Willam DeLap from Ireland, & Ruth.