Property Nisbet and family Melsonby
From the monastery of Coldinghams records Thomas Prior of the Monastary of Coldingham has been claimed to be an ancestor of Nisbet of that Ilk and son of Aldan of Nisbet.
Thomas Prior of the Monastary of Coldingham is Thomas de MELSONBY (died after 1244) and was a medieval Bishop of Durham elect and Prior of Durham. He was the son of the rector of Melsonby from Melsonby in North Yorkshire, so his father was not Aldan of Nisbet as often claimed.
He was a Franciscan monk (and as such did not marry) and prior of Coldingham, the Monastery at Coldingham was granted the lands of Nisbet in Berwickshire and as the prior he would then in that capacity act on behalf of the monastery and be mentioned in all the documents concerning lands of Nisbet. More for Thomas prior of Coldingham
SIGILLVM:THOME:PRIORIS:DE:COLDINGHAM [The seal of Thomas, Prior of Coldingham] The Priors were free to design their own seals. As the Priory Church at Coldingham was dedicated to St Mary, often its Priors had Mary and Child on their seals. In the case of the seal shown, there is a side scroll to make it clear that the figure is Mary. Usually she holds the Christ Child, but in this case the Child is represented by a cross surmounting a sphere https://web.archive.org/web/20031022234152/http://www.stebba-coldinghampriory.org.uk/web/furtherthomas3.htm This is said to be his likeness. It is at the end of a ceiling rib, tucked into the north side of what was Cuthbert's Shrine in the Chapel of the Nine Altars at Durham Cathedral