 Adam de Lamberton gave a charter of a third part of his land of Lamberton to his grandson, Galfrido de Hasswell between 1190 and 1200.In the National Archives of Scotland (RH1/2/59) there is a charter of Sir Peter de Mordington, knt., son of the deceased Sir William de Mordington, as superior, in favour of Simon de Baddeby of certain lands in Lamberton, dated 1270.A William de Lamberton was superior c. 1318.