What is "duvale"

Duvale is a historic estate in the parish of Bampton, Devon. It is situated on a narrow flat plain in the steep-sided valley of the River Exe, 1 1/2 miles south west of the town of Bampton and 5 miles north of Tiverton, also on the River Exe further downstream. The name, given by Pole (d.1635) as Deu Vale, is said by him to signify "a valley of water". It was until the nearby construction of the present busy A396 road a place of exceptional seclusion and tranquility.