Early-attested site in the Parish of Cleator
- Suntun c.1205 CW(OS)i
- Sunton' 1278 Ass 1291 CW(OS)i
- in Cleterge 1518–29 ECP
The name survives in Sunton Sike (supra 28) and in the fields Far and Near Sumpton, and possibly contains the OE word sunt , 'swamp,' which occurs in Sunt and Sompting (PN Sx 191, 201).