It was agreed that they should enjoy all their ancient laws, liberties, and customs; that in case young Edward and Margaret should die without issue, the crown of Scotland should revert to the next heir, and should be inherited by him free and independent; that the military tenants of the crown should never be obliged to go out of Scotland, in order to do homage to the sovereign of the united kingdoms, nor the chapters of cathedral, collegiate, or conventual churches, in order to make elections; that the parliaments summoned for Scottish affairs should always be held within the bounds of that kingdom; and that Edward should bind himself, under the penalty of one hundred thousand marks, payable to the pope for the use of the holy wars to observe all these articles.[*] * Rymer, vol.ii.p.

482.
It is not easy to conceive that two nations could have treated more on a footing of equality than Scotland and England maintained during the whole course of this transaction; and though Edward gave his assent to the article concerning the future independency of the Scottish crown, with a "saving of his former rights," this reserve gave no alarm to the nobility of Scotland, both because these rights, having hitherto been little heard of had occasioned no disturbance, and because the Scots had so near a prospect of seeing them entirely absorbed in the rights of their sovereignty.
{1291.} But this project, so happily formed and so amicably conducted, failed of success, by the sudden death of the Norwegian princess, who expired on her passage to Scotland,[*] and left a very dismal prospect to the kingdom.

Though disorders were for the present obviated by the authority of the regency formerly established, the succession itself of the crown was now become an object of dispute; and the regents could not expect that a controversy, which is not usually decided by reason and argument alone, would be peaceably settled by them, or even by the states of the kingdom, amidst so many powerful pretenders.

The posterity of William, king of Scotland, the prince taken prisoner by Henry II., being all extinct by the death of Margaret of Norway, the right to the crown devolved on the issue of David, earl of Huntingdon brother to William, whose male line being also extinct, left the succession open to the posterity of his daughters.

The earl of Huntingdon had three daughters; Margaret, married to Alan, lord of Galloway, Isabella, wife of Robert Brus or Bruce lord of Annandale, and Adama, who espoused Henry, Lord Hastings.