If the Orrs came from the Parish of Urr, and I think they probably did, the fact is that not many Orrs or Urrs are to be found there today. Something cataclysmic happened in Urr, possibly during a revolt by one of the Lords of Galloway, to destroy a substantial settlement like the Motte of Urr. Was it war or plague ? We may never know.

At the end of King David I's reign there were nine dioceses not including Galloway, which remained under the Archbishop of York's jurisdiction. This expansion meant that the vast wealth and lands of the mediaeval church became a factor in the transformation of a backward country.

Perhaps this was a factor in the migration of the Urrs/Orrs to the church lands of Lochwinnoch where they were tenants of the Abbey of Paisley ca 1300. Hughe de Urre (who lost his lands to Henry de Percy) would have had the motive: The bishopric of Glasgow, which David had created, would be known to him; he would have had the contacts at Court and probably the money to be able to make such a move, and; he may have been compensated with land in Lochwinnoch when the barony of Urr was given to de Percy. Conjecture I know, but for now, this is my favourite hypothesis.