Riders with Sheep near an Estuary, 1830, Watercolor, sheet: 6 1/8 x 9 3/16 in. (15. 5 x 23. 3 cm), Drawings, David Cox (British, Birmingham 1783?1859 Harborne, West Midlands), Cox painted Riders With Sheep Near an Estuary, possibly a view of Traeth Mawr, near Harlech, in North Wales, around the middle of his prolific career. He had already published an influential treatise on watercolor, made European tours, and moved to London