David of Lindsey has granted and by this his present charter established to Holyrood Abbey in free and perpetual alms all that land of Slipperfield (PEB) which Richard Comyn gave them in free alms and by his charter established, by stated bounds, with the liberty to build a mill, free and quit from all service and custom, as contained in the charters of Richard Comyn and William Comyn, his son.
Early to mid- 13th century, poss. × ca. 1211
Prob. × succession of William Comyn to earldom of Buchan