Trewithen Researching Trewithen: The House and Its Works Details Country House Trewithen Title(s) Researching Trewithen: The House and Its Works Date 2020-11-20 Credit Film by Jonathan Law. Made with the participation of Martin Postle, Emily Burns, and Rodolfo Acevedo Rodriguez. Catalogue items from Trewithen Trewithen Unknown Woman Richard Cosway Trewithen King Louis XIII of France Unknown Artist, ? c.1620s Trewithen Equestrian Portrait of Charles I after Anthony van Dyck, ? later 17th century Share-icon