Hi welshspencer
Ive found Alexander and Agnes Duncan on the 1841 Census for Woodbury.
The 1841 Census records their address as "in the village"
Alexander Duncan, aged 60, the space for his occupation has a letter in it... very odd. Born Scotland.
Agnes Duncan, aged 55, birth location not recorded.
William Duncan, aged 23, Born Devon
George Duncan, aged 18, Born Devon
Joseph Duncan, aged 15, Born Devon
Census ref: Class: HO107; Piece 208; Book: 18; Civil Parish: Woodbury; County: Devon; Enumeration District: 4; Folio: 8; Page: 11;
Hope this helps, Graham