The extent of West Saxon territory at the start of Ine's reign is fairly well known. The upper Thames valley on both sides of the river had long been the territory of the Gewisse, though Cædwalla had lost territory north of the river to the kingdom of Mercia before Ine's accession. To the west, Ceawlin of Wessex is known to have reached the Bristol Channel one hundred years before.Stenton, Anglo-Saxon England, p. 29. The West Saxons had since expanded further down the southwestern peninsula, pushing back the boundary with the British kingdom of Dumnonia, which was probably roughly equivalent to modern Devon and Cornwall.Stenton, Anglo-Saxon England, pp. 72–73. On the West Saxons' eastern border was the kingdom of the East Saxons, which included London and what is now Surrey. To the southeast were the South Saxons, on the coast east of the Isle of Wight. Beyond Sussex lay the kingdom of Kent.Blair, Roman Britain, p. 209. Ine's predecessor, Cædwalla, had made himself overlord of most of these southern kingdoms,Yorke, Kings and Kingdoms, pp. 137–138. though he had not been able to prevent Mercian inroads along the upper Thames.
The extent of West Saxon territory at the start of Ine's reign is fairly well known. The upper Thames valley on both sides of the river had long been the territory of the Gewisse, though Cædwalla had lost territory north of the river to the kingdom of Mercia before Ine's accession. To the west, Ceawlin of Wessex is known to have reached the Bristol Channel one hundred years before.Stenton, Anglo-Saxon England, p. 29. The West Saxons had since expanded further down the southwestern peninsula, pushing back the boundary with the British kingdom of Dumnonia, which was probably roughly equivalent to modern Devon and Cornwall.Stenton, Anglo-Saxon England, pp. 72–73. On the West Saxons' eastern border was the kingdom of the East Saxons, which included London and what is now Surrey. To the southeast were the South Saxons, on the coast east of the Isle of Wight. Beyond Sussex lay the kingdom of Kent.Blair, Roman Britain, p. 209 Ine's predecessor, Cædwalla, had made himself overlord of most of these southern kingdoms,Yorke, Kings and Kingdoms, pp. 137–138. though he had not been able to prevent Mercian inroads along the upper Thames.