290 The Period of Constitution Making In several respects conditions were exceptional in the Lancastrian period, conditions reflected in such writings as Portescue's, but it is not too much to say that the lines of development just sketched had brought forth limited monarchy in England. The bitter faction fights which led to the Wars of the Roses, bringing out the rival claims to the throne of Lancaster and York, did much to develop and clarify ideas about primogenitary succession, especially the matter of female transmission of title. "When in 1460 the Duke of York laid his pedigree before the lords with a formal demand for the crown, legitimism makes its first appearance in English history/*1 The principle of heredity which had long obtained in private law now became the rule for the royal title, and on this basis the Yorkist line came to the throne in 1461.2 They were legitimists and were recognised as such,3 and there was, as might be expected, a greater manifestation of inde- pendence and security. Yet the Yorkist sovereigns did not act as if they were without limitation, however much the logic of their position might have countenanced such action. How things would have gone had they remained on the throne it is hard to say. As it was, their short and troubled tenure did not break the principle of limited monarchy, and it is certain that civil wars and weak or bad kings had, by 1485, so hurt the central power that England's greatest need was a strong and able royal line. The overthrow of Richard III. and the succession of Henry of Richmond as a distinctly parliamentary sov- ereign, with a most slender hereditary title and to the prejudice of many more legitimate claimants, would * Maitland, C. H. £., p. 194. a Under stress of circumstance in 1328, when recognition of female transmission would have brought the English Edward to her throne, France took the opposite view, and transmission of the royal title through the male line only was the rule as long as monarchy lasted. * The language of the parliamentary recognition of the Duke of York as lass to the throne and of the act validating the acts of the Lancastrian sovereigns brings out dearly the legitimacy of their claim. A. and $., documents 128,129.