Sullivans in Ballyvourney

Hello! I'm trying to source information on my great great grandfather, Owen Sullivan, who, we believe, lived in the Ballyvourney area in the late 1800's.He had two sons that we know of - James and Owen. Family tradition suggests that he was a harness maker. Son - James James was a teacher in Keimaneigh National School, and died, aged 46, in 1896.He married Kate Cronin from Gougane Barra.He is buried, according to strong family tradition, in the body of the ruined church in Ballyvourney. Son - Owen Owen lived in Kilmeedy, Milstreet, at the beginning of the 1900's.He married Kate Horgan and had 9-10 children. We have their names. Baptismal records list assorted Sullivans as sponsors - Eugene, Timothy, Mary, Hanora. Other Information Family tradition suggests that there was a connection to the Quill family in Ballyvourney also. My mother remembers a Duirmuid Sullivan from Ballyvourney working in Quills shopin Ballingeary in the 1950's (she thinks!). She understood that he was related to her but is not sure how. Many thanks for any help that comes from this posting!