[Richard] had a grant of the castle of Northallerton in 1144, and another from King David and Earl Henry his son to himself and his wife Hextilda or Histilla, and their heirs, of certain lands in Tynedale, the heritage of Hextilda's father, Huctred, son of Waldef.
Between the years 1152 and 1159 he gave to the monks of St Mary of Kelso the church of Lyntunrudderic (now West Linton) for the souls of his lord the Earl Henry and of his own son John, whose bodies were buried at Kelso, on condition that he himself, his wife and children, should be received into the brotherhood of the convent, and be made partakers of its spiritual benefits. This grant was confirmed from time to time during the next century.
About the same time, or before 1162, he and his wife granted the lands of Carraw to the monks of Hexham, with similar conditions of confraternity to himself, his wife and his brother Walter. He also, about 1166, granted, with consent of his wife, the lands of Sliipperfield in the county of Peebles ot the Augustine friars of Holyrood.
He was probably the Richard Comyn mentioned as one of the hostages in the
treaty of Falaise 8 December 1174, and it may have been he who in 1176 was fined £100 for not attending the
Justice ayre in Northumberland.
He died between 1176 and 1182, when his widow marred Malcolm, Earl of Atholl.
He married, about 1145, Hextilda, daughter of Huctred of Tynedale by his wife Bethoc, the daughter of Donald Bane.