Unexplained DNA relatives of John Doyle (1951- )

John Doyle is a 3rd-5th cousin to my late father Cornelius O'Sullivan, Knockgorm, Drimoleague. County Cork, Ireland.
His people were all from the parish of Caheragh and the area around Skibbereen in County Cork.
The main surnames with their branch or family names are O'Sullivan Pritty, O'Sullivan Bearnach, O'Donovan Stookey, Connolly Cenoic, Harrington Caska McCarthy Sowney and Hegarty.
Patricia (Hannah Patricia Tomlinson) kevintomlinson1@aol.com
Closest common ancester 5 generations back for Sandra Longdon and John Doyle see http://trees.ancestrylibrary.com/tree/79977592/family