Outside the defensive wall of enclosure lived the retainers of the abbey. Where an abbot or abbess was head of an ecclesiastical tribe, he or she was bound to find land for each household: nine furrows of arable land, nine of bog, nine of grass-land, and as much of forest. As the population increased, a secular or an ecclesiastical chief was obliged to obtain an extension of territory, or would be held to have forfeited his claims as a chief. This led to incessant feud among the Celtic princes; it forced the saints to be continually striving to obtain fresh grants of land and make fresh settlements. When there was no more chance of obtaining land in Ireland, they sent swarms to Britain and to Brittany, to found colonies there, under the jurisdiction of the saint. This explains the way in which the Celtic saints were incessantly moving about. They were forced to do so to extend their lands so as to find farms for their vassals. A very terrible story is told of the condition of affairs in Ireland in 657. The population of the island had increased to such an extent that the chiefs could not find land enough for the people. Dermot and Blaithmac, the kings, summoned an assembly of clergy and nobles to discuss the situation and consider a remedy. They concluded that the “elders” should put up prayer to the Almighty to send a pestilence, “to reduce the number of the lower class, that the rest might live in comfort.” S. Fechin of Fore, on being consulted, approved of this extraordinary petition. And the prayer was answered from heaven, but the vengeance of God fell mainly on the nobles and clergy, for the Yellow Plague which ensued, which swept away at least a third of the population, fell with special heaviness on the nobles and clergy, of whom multitudes, including the two kings and S. Fechin of Fore, were carried off. S. Itha does not seem to have coveted land, and she assumed a different position from that taken by S. Bridget. She was not an independent chieftainess over a sacred tribe, but acted as prophetess to the secular tribe of the Hy Conaill. Just as among the Germans, the warriors had their wise women who attended the tribe, blessed the arms of the warriors, and uttered oracles, so was it among the Celts; and we are assured that the entire sept, or clan, unanimously adopted S. Itha as their religious directress and, in fact, wise woman. In such cases, when a prophecy came true, when a military undertaking blessed by the Saint proved successful, the usage was, that an award was made in perpetuity to him or to her, a tax imposed that must be paid regularly by the tribe. Thus there were two ways by which a Celtic saint might subsist—either as an independent chieftain over a sacred tribe, or as the patroness or prophetess of a tribe, not owning much land, but drawing a revenue from the sept or clan.