Hello Rosalie, You may already have this information...in case you do not. In Major Francis Jones "Historic Houses of Pembrokeshire and Their Families" he shows Wathens at TALBENNY HALL, Talbenny, owned by Adam Wathen, gent., in 1797. In 1805 James Wathen was of Middle Hasguard and Adam Wathen was of Talbenny Hall. By 1834 William Cole was owner. The houses he shows at Robeston Wathan are GREAT CANASTON and ROBESTON WATHAN HOUSE. Regards, Elaine.