A pen and ink and watercolour drawing of a tented wagon, facing right. Inscribed at top in pencil in the artist's hand, 'belonging to Sr W. W. Wynn. 1777'. Mounted together with RCINs 914361-914363.

Sandby made a number of visits to the estate of Sir Watkin Williams-Wynn at Wynnstay, the first of which was in 1770, during which he made many sketches and views of north Wales, and gave drawing lessons to Williams-Wynn's children. A drawing of Paul Sandby sketching by William Parry, another artist patronised by Williams-Wynn, is also in the Royal Collection and must have been made around the same time (913550). Other drawings of people and life on the Wynnstay estate are 914518, 914522, 914444 and a view of the house is 451580. A set of twelve aquatints of views of North Wales were published 'under the patronage of the Hon. Sir W.W. Wynn Bart' in 1776. A set of watercolours for these prints were at Sotheby's in 2019. Five views of north Wales were also included in Sandby's set of 150 Select Views.