They hosted Jersey at the Hougue du Pommier over two days on the weekend.
It was a particularly successful weekend for Alison Merrien who went unbeaten in all four finals she contested.
She was 21-7 winner over Megan Kivlin in the Ladies singles, before teaming up to win the doubles, triples and fours.
Guernsey also won the Men’s U25 singles when Bradley Le Noury beat T Greechan 21-14 and the Men’s veteran fours as Michael Le Noury, David King, Martyn De Carteret and Gary Pitschou beat the Jersey side 28-18.
Full results
Men’s Veteran Fours: M. Le Noury, D. King, M. De Carteret & G. Pitschou (Guernsey) bt D. Ahier, B. Bisson, M. Hamilton & A. Shaw (Jersey) 28-18
Ladies Triples: C. Bonsall, S. Petit & A. Merrien (Guernsey) bt G. Le Long, A. Bisson & O. Crowhurst (Jersey) 19-8
Men’s Fours: M. Hamilton, T. Greechan, G. Hodgetts & T. Greechan (Jersey) bt D. King, K. Lowe, S. Bichard & D. Jeffery 28-12
Ladies Fours: R. Ogier, C. Bonsall, S. Petit & A. Merrien (Guernsey) bt G. Le Long, M. Kivlin, C. Greechan & L. Greechan (Jersey) 24-12
Men’s Triples: M. Andrieux, G. Davis & R. Davis (Jersey) bt S. Bichard, B. Le Noury & P. Merrien (Guernsey) 14-12
Men’s Pairs: L. Le Sueur & R. Davis (Jersey) bt I. Merrien & M. Solway (Guernsey) 22-8
Ladies Pairs: S. Petit & A. Merrien (Guernsey) bt G. Le Long & L. Greechan (Jersey) 28-14
Men’s Singles: T. Greechan (Jersey) bt G. Pitschou (Guernsey) 21-15
Men’s U25 Singles: B. Le Noury (Guernsey) bt T. Greechan (Jersey) 21-14
Ladies U25 Singles: C. Greechan (Jersey) bt E. Rich (Guernsey) 21-9
Ladies Singles: A. Merrien (Guernsey) bt M. Kivlin (Jersey) 21-7
Pictured top: Guernsey Ladies Fours (l-r) Rose Ogier, Alison Merrien, Catherine Bonsall and Shirley Petit. Image from Guernsey Indoor Bowls Facebook.