May 23, 2021 The Double Cube Room. The 9th Earl placed the painting by van Dyck of Charles I’s children Credit: Will Pryce/Country Life In the early 18th century, Wilton House in Wiltshire underwent improvement at the hands of the 9th Earl of Pembroke, an enthusiastic amateur architect. For a new book on Wilton — to this day the seat of the Earl of Pembroke — John Martin Robinson assesses his remarkable legacy. Photography by Will Pryce and Simon Upton. The splendours of Wilton today owe a great deal to the early 18th century and the figure of Henry, 9th Earl of Pembroke, (1689–1750), known as the ‘Architect’ Earl. His often-overlooked contribution to this magnificent house — in origin a great Benedictine convent that was suppressed at the Reformation and repeatedly remodelled thereafter — was described by Horace Walpole: ‘The towers, the chambers, the scenes which Holbein, Jones and Vandyke had decorated, and which Earl Thomas had enriched with the spoils of the best ages, received the last touches of beauty from Earl Henry’s hand… No one had a purer taste in building than Earl Henry, of which he gave a few specimens besides his work at Wilton.’