Tewkesbury is a town in Gloucestershire, England. It stands at the confluence of the River Severn and the River Avon, and also minor tributaries the Swilgate and Carrant Brook. It gives its name to the Borough of Tewkesbury, of which the town is the largest settlement. The name Tewkesbury comes from the name of a Saxon who founded a hermitage there in the seventh century, Theoc, and in the Saxon tongue was called Theocsbury.