Lastly, as we have seen, the Picts of Cat had never been conquered, nor had their land ever been occupied by the legions of Rome, which had stopped at the furthest in Moray; and the sole traces of Rome in Cat are, as stated, two plates of hammered brass found in a Sutherland broch, and some Samian ware. Further, Christian though he had been long before Viking times, the Pict of Cat derived his Christianity at first and chiefly from the Pictish missions, and later from the Columban Church, both without reference to Papal Rome; and his missionaries not only settled on islands off his coasts, but later on worshipped in his small churches on the mainland; and many a Pictish saint of holy life was held in reverence there. About the eighth century and probably earlier, immigrants from the southern shores of the Baltic pressed the Norse westwards in Norway, and later on over-population in the sterile lands which lie along Norway's western shores, drove its inhabitants forth from its western fjords north of Stavanger and from The Vik or great bay of the Christiania Fjord, whence they may have derived their name of Vikings, across the North Sea to the opposite coasts of Shetland, Orkney and Cat, where they found oxen and sheep to slaughter on the nesses or headlands, and stores of grain, and some silver and even gold in the shrines and on the persons of those whom they attacked, and in still later days they sought new lands over the sea and permanent settlements, where they would have no scat to pay to any overlord or feudal superior. When the Vikings landed, superior discipline, instilled into them by their training on board ship, superior arms, the long two-handed sword and the spear and battle-axe and their deadly bows and arrows, and superior defensive armour, the long shield, the helmet and chain-mail, would make them more than a match for their adversaries.[12] Above all, the greater ferocity of these Northmen, ruthlessly directed to its object by brains of the highest order, would render the Pictish farmer, who had wife and children, and home and cattle and crops to save, an easy prey to the Viking warrior bands, and the security of his broch would of itself tend to a passive and inactive, rather than an offensive, and therefore successful defence.