This is a more complete translation of one of the John McDuffee headstones in this cemetery (Old Dunluce Cemetery - St. Cuthbert's. It was included in some information to me from Jean McCauley of Coleraine about 10 years ago. There is a question mark (not on headstone) by the age 45 (years) which may indicate that it (his age)was hard to read or possibly inaccurate. This translation does include his mother's name, Jean McDuffee, and her date of death and age.
"Here lieth the body of John McDuffee late of Boneyclassagh, who departed this life July 18th, 1808, aged ?45 y and his mother Jean McDuffee who departed this life 4th of Febry 1809 aged 76 years."