 Members of the clan are recorded in the late 13th century Ragman Rolls, but it is not until the 14th century when the family rose in prominence, through a dynastic marriage with the Eglinton family.Through this marriage the clan acquired the Eglinton estates; the clan also acquired the lands of the Ardrossan family (which was possibly a branch of the Barclay family).In 1296 John de Montgomery and his brother are recorded on the Ragman Rolls rendering homage to Edward I of England.