The Tribal Hidage lists thirty-five peoples, or tribes, with assessments in hides, which may have originally been defined as the area of land sufficient to maintain one family. The assessments in the Hidage reflect the relative size of the provinces. Although varying in size, all thirty-five peoples of the Tribal Hidage were of the same status, in that they were areas which were ruled by their own elite family (or royal houses), and so were assessed independently for payment of tribute. By the end of the sixth century, larger kingdoms had become established on the south or east coasts. They include the provinces of the Jutes of Hampshire and Wight, the South Saxons, Kent, the East Saxons, East Angles, Lindsey and (north of the Humber) Deira and Bernicia. Several of these kingdoms may have had as their initial focus a territory based on a former Roman civitas. By the end of the sixth century, the leaders of these communities were styling themselves kings, though it should not be assumed that all of them were Germanic in origin. The Bretwalda concept is taken as evidence of a number of early Anglo-Saxon elite families. What Bede seems to imply in his Bretwalda is the ability of leaders to extract tribute, overawe and/or protect the small regions, which may well have been relatively short-lived in any one instance. Ostensibly "Anglo-Saxon" dynasties variously replaced one another in this role in a discontinuous but influential and potent roll call of warrior elites. Importantly, whatever their origin or whenever they flourished, these dynasties established their claim to lordship through their links to extended kin, and possibly mythical, ties. As Helen Geake points out, "they all just happened to be related back to Woden". The process from warrior to cyning – Old English for king – is described in Beowulf: Conversion to Christianity (588–686) In 565, Columba, a monk from Ireland who studied at the monastic school of Moville under St. Finnian, reached Iona as a self-imposed exile. The influence of the monastery of Iona would grow into what Peter Brown has described as an "unusually extensive spiritual empire," which "stretched from western Scotland deep to the southwest into the heart of Ireland and, to the southeast, it reached down throughout northern Britain, through the influence of its sister monastery Lindisfarne." In June 597 Columba died. At this time, Augustine landed on the Isle of Thanet and