To the east of Pevensey, beyond the Saxon Shore fort of Anderitum, on the other side of the estuary and marsh and from there to the border with the Kingdom of Kent, lived a group known as the Haestingas. They gave their name to Hastings. Not very much is known of the Haestingas but they were believed to be a separate people to the South Saxons; however, there is no archaeological evidence for occupation by Anglo-Saxons in that area of Sussex between the 5th and 8th centuries. Medieval sources and place name evidence suggest that people had begun living there by the late 8th century. Some of the Saxon charters that date from the Kingdom of Sussex provide evidence which suggests the existence of two separate dynasties in Sussex. The charters of King Northelm (or Nunna), who ruled Sussex in the late 7th and early 8th century regularly attest a second king by the name of Watt (or Wattus). The historian C.T. Chevalier has suggested that Watt may have ruled the Haestingas. This is because place-names with the name "Watt" or "What" occur in the Hastings region, but are not found in western Sussex. The theory has been seen as plausible by other historians. Chevalier goes on to suggest that the Haestingas may have been of Frankish origin; however, other historians have rejected this, arguing that it is based on a misinterpretation of place-name evidence.