1651) was a Welsh lawyer and landowner, as well as a supporter of King Charles I of England during the English Civil War.
Having studied at Oriel College, Oxford, and Middle Temple, he qualified as a barrister in 1608.
He married Mary Stedman, and the family eventually settled at Maesyfelin, near Lampeter.
The poet Henry Vaughan at one time served as secretary to Sir Marmaduke.
[3] The eldest of Sir Marmaduke's three sons, Sir Francis Lloyd, also a Royalist, was a Member of Parliament before the war and regained a position of favour following the Restoration of King Charles II of England.