No authentic South Saxon king list or genealogy exists, unlike what can be found for other Anglo-Saxon kingdoms.
According to the charters, most kings did not govern alone: Nothhelm reigned with two or three colleagues and Oslac with four.
The locations of the lands granted in their charters indicate that they reigned jointly and that there was no division of territory.
Indeed, “[t]here is nothing remarkable in the existence of two or even more contemporary kings in the same people in the seventh century.
The ancient idea that royal dignity was a matter of birth rather than of territorial rule still survived at this date.”[1] The traditional residence of the South Saxon kings was at Kingsham, once outside the southern walls of Chichester although within its modern boundaries.