Not sure if this is the house your referring to Hugo?
Craig y Mor, Trearddur Bay, is an austere, neo-Georgian, early 20th century house situated on a prominent local coastal landmark. The house was built for William Smellie, a wealthy Englishman and founder member of the Trearddur Bay Sailing Club, as a holiday home. It was designed by F. G. Hicks, architect of Liverpool and the construction of the house began c 1911, work ceased during the First World War and recommenced shortly afterwards. The building was finally completed in 1922. The main part of the house is a 2-storey, 5-window range with a 2-storey, 4-window lower wing set at right angles to the front to form an L-shaped plan with the entrance porch in the angle; the advanced wing continues at a lower level with a storeyed servants wing, garage and boathouse.