The feudalism of France and England clearly recognized the right of women to succeed to baronies, even of the first importance, though with some irregularities of practice and the feudal right of marriage which the English kings considered so important rested, in the case of female heirs, on this principle. The king's son, Robert of Gloucester, and his nephew Stephen, now Count of Boulogne, who disputed with one another the right to take this oath to Matilda's succession next after her uncle, David, king of Scots, had both been provided for by Henry in this way. Still, even in these cases, a difference was likely to be felt between succession to the barony itself, and to the title and political authority which went with it, and the difference would be greater in the case of the highest of titles, of the throne of such a dominion as Henry had brought together. Public law in the Spanish peninsula had already, in one case, recognized the right of a woman to reign, but there had been as yet no case in northern Europe. The dread of such a succession was natural, in days when feudal turbulence was held in check only by the reigning king, and when even this could be accomplished only by a king of determined force. The natural feeling in such cases is undoubtedly indicated by the form of the historian's statement referred to above, that Robert of Gloucester declined the suggestion that he should be king out of loyalty to "his sister's son." It was the feeling that the female heir could pass the title on to her son, rather than that she could hold it herself. William of Malmesbury states, in his account of these events, that he had often heard Bishop Roger of Salisbury say that he considered himself released from this oath to Matilda because it had been taken on condition that she should not be married out of the kingdom except with the counsel of the barons.[24] The writer takes pains at the same time to say that he records this fact rather from his sense of duty as a historian than because he believes the statement. It has, however, a certain amount of inherent probability. To consult with his vassals on such a question was so frequently the practice of the lord, and it was so entirely in line with feudal usage, that the barons would have had some slight ground on which to consider themselves released from this oath, even if such a specific promise had not been made, nor is it likely that Henry would hesitate to make it if he thought it desired. It is indeed quite possible that Henry had not yet determined upon the plan which he afterwards carried out, though it may very likely have been in his mind, and that he was led to this by events which were taking place at this very time in France.