[891] Ann. Cambr. a. 1164 (Williams, p. 49). _Brut y Tywys._, a. 1162 (Williams, p. 199). Both dates are self-evidently wrong; the only possible one is the intermediate year. [892] R. Diceto (Stubbs), vol. i. p. 311. Next year Rees, provoked as he alleged by Henry’s non-fulfilment of his promises and also by the shelter given to the slayer of his nephew by Earl Roger of Clare, harried the whole border and roused all Wales to fling off the yoke of the “Frenchmen,” as the Welsh still called their Norman conquerors.[893] Henry was obliged to delay his vengeance till the following summer, when it furnished him with an excellent pretext for escaping from his ecclesiastical and political entanglements on the continent.[894] He set out from Oswestry[895] at the head of a vast army drawn from all parts of his dominions, both insular and continental, and reinforced by Flemish and Scottish allies.[896] All the princes of Wales were arrayed against him, and both parties intended the campaign to be decisive. But the wet climate of the Welsh hills proved a more dangerous foe than the mountaineers themselves; and after remaining for some time encamped at Berwen, Henry was compelled to beat an ignominious retreat, completely defeated by the ceaseless rain,[897] and venting his baffled wrath against the Welsh in a savage mutilation of their hostages.[898] For six years after this, as we have seen, he never had time to visit his island realm at all, and the daring “French” settlers in Wales or on its borders, such as the Geraldines or the De Clares, were free to fight their own battles and make their own alliances with the Welsh just as they chose; it was not till Henry in 1171 followed them to their more distant settlement in Ireland that he again entered South Wales. Then he used his opportunity for a series of personal interviews with Rees,[899] which ended in a lasting agreement. Rees was left, in the phrase of his native chronicler, as the king’s “justice” over all South Wales.[900] How far he maintained, along the border or within his own territories, the peace and order whose preservation formed the main part of an English justiciar’s duty, may be doubted; but in the rebellion of 1174 he shewed his personal loyalty to the king by marching all the way into Staffordshire to besiege Tutbury for him, and some of his followers did equally good service in the suppression of the Norman revolt.[901] David of North Wales, too, if he did nothing to help the king, at least resisted the temptation of joining his enemies; and the war was no sooner fairly over than, anxious that some reflection of the glories of English royalty should be cast over his own house, he became an eager suitor for the hand of Henry’s half-sister Emma--a suit which Henry found it politic to grant.[902] A few months later, in June 1175, the king made an attempt to secure the tranquillity of