I have found on page 70 the Ballintra headstones map, and Kavanagh is listed as stone N27
Page 74 lists the inscription as "I.l.m.o Patrick and Ellen Kavanagh. Cabragh. Their daughter Anne Fitzpatrick died 4th March 1950, her husband Phil, died 21st Jan 1952. Their daughter Mamie Fitzpatrick. Cabragh, died 23 June 1989. "A Gaelic inscription which translates as May his holy soul be on the right side of God. is also recorded.
Hope this is the Kavanagh you are looking for.