She had no near relatives, and more than a dozen Scottish or Anglo-Scottish nobles, distantly related to the royal line, put in a claim to the crown, or at least to a part of the royal heritage. The board of six regents, who had been ruling Scotland for the young queen, seeing their own power at an end and civil war likely to break out, begged Edward of England to arbitrate between the claimants. The history of the next twenty years turned on the legal point whether the arbitrator acted--as he himself contended--in the capacity of suzerain, or--as the Scots maintained--in that of a neighbour of acknowledged wisdom and repute, invited to settle a domestic problem. This question of the relations between the English and the Scottish crowns had been raised a dozen times between the days of Edward the Elder and those of Henry III. There was no denying the fact that the northern kings had repeatedly done homage to their greater neighbours. But, save during the years when William the Lion, after his captivity, had owned himself the vassal of Henry II. for all his dominions, there was considerable uncertainty as to the exact scope of the allegiance which had been demanded and given. And William's complete submission had apparently been cancelled, when Richard I. sold him in 1190 a release from the terms of the treaty of Falaise. Since that date Alexander II. and Alexander III. had repeatedly owned themselves vassals to the English crown, and had even sat in English parliaments. But it was possible for patriotic Scots to contend that they had done so only in their capacity as English barons--for they held much land south of Tweed--and to point to the similarity of their position to that of the English king when he did homage for his duchy of Guienne at Paris, without thereby admitting any suzerainty of the French crown over England or Ireland. On the last occasion when Alexander III. had owned himself the vassal of Edward I., there had been considerable fencing on both sides as to the form of the oath, and, as neither sovereign at the moment had wished to push matters to a rupture, the words used had been intentionally vague, and both parties had kept their private interpretations to themselves. But now, when Edward met the Scottish magnates, who had asked for his services as arbitrator, he demanded that they should acknowledge that he was acting as suzerain and overlord of the whole kingdom of Scotland. After some delay, and with manifest reluctance, the Scots complied; their hand was forced by the fact that most of the claimants to the crown had hastened to make the acknowledgment, each hoping thereby to prejudice the English king in his own favour.