William de Lamberton relates that he has acknowledged before Duncan, bishop of Dunkeld, on the occasion of his episcopal visitation to the church of Dalgety, that he has unjustly appropriated to himself the land belonging to the abbot and convent of Inchcolm, called the 'Corsakir' in the land of Otterston, which his forbears gave to the monastery etc

Pateat universis per presentes me Willelmum de Lambirton recognovisse coram Reverendo in Christo Patre ac domino meo Domino Duncano Dei gratia episcopo Dunkeldensi in ecclesia parochiali de Dalgathy die martis proxima ante diem dominicam in Ramis palmarum in Visitatione sua facta ibidem quod ignoranter iniuste ac negligenter appropriavi mihi quandam terram Religiosorum virorum dominorum abbatis et conventus Insule Sancti Columbe que dicitur le Corsakir in terra de Oterston sita Quam quidem terram predecessores mei eisdem religiosis in puram et perpetuam elemosinam contulerent {. . .}