[Sidenote: Kent] It was through this struggle and the establishment of a lordship on the part of the stronger and growing states over their weaker and stationary fellows that the English kingdoms were to make their first step towards union in a single England. Such an overlordship seemed destined but a few years before to fall to the lot of Wessex. The victories of Ceawlin and Cuthwulf left it the most powerful of the English kingdoms. None of its fellow states seemed able to hold their own against a power which stretched from the Chilterns to the Severn and from the Channel to the Ouse. But after its defeat in the march upon Chester Wessex suddenly broke down into a chaos of warring tribes; and her place was taken by two powers whose rise to greatness was as sudden as her fall. The first of these was Kent. The Kentish king AEthelberht found himself hemmed in on every side by English territory; and since conquest over Britons was denied him he sought a new sphere of action in setting his kingdom at the head of the conquerors of the south. The break up of Wessex no doubt aided his attempt; but we know little of the causes or events which brought about his success. We know only that the supremacy of the Kentish king was owned at last by the English peoples of the east and centre of Britain. But it was not by her political action that Kent was in the end to further the creation of a single England; for the lordship which AEthelberht built up was doomed to fall for ever with his death, and yet his death left Kent the centre of a national union far wider as it was far more enduring than the petty lordship which stretched over Eastern Britain. Only three or four years after Gregory had pitied the English slaves in the market-place of Rome, he found himself as Bishop of the Imperial City in a position to carry out his dream of winning Britain to the faith; and an opening was given him by AEthelberht's marriage with Bertha, a daughter of the Frankish king Charibert of Paris. Bertha like her Frankish kindred was a Christian; a Christian bishop accompanied her from Gaul; and a ruined Christian church, the church of St. Martin beside the royal city of Canterbury, was given them for their worship. The king himself remained true to the gods of his fathers; but his marriage no doubt encouraged Gregory to send a Roman abbot, Augustine, at the head of a band of monks to preach the Gospel to the English people. The missionaries landed in 597 in the Isle of Thanet, at the spot where Hengest had landed more than a century before; and AEthelberht received them sitting in the open air on the chalk-down above Minster, where the eye nowadays catches miles away over the marshes the dim tower of Canterbury. The king listened patiently to the long sermon of Augustine as the interpreters the abbot had brought with him from Gaul rendered it in the English tongue. "Your words are fair," AEthelberht replied at last