In the 16th century Edward Seymour, 1st Duke of Somerset and brother of Jane Seymour (3rd wife Henry VIII) took over, and then lost, large estates including Brean, to which Steep Holm was allied. The marriage of his sister Jane and Henry VIII in 1536 coincided with him being made Viscount Beauchamp, potentially linking back to ancestral marriage between Sir Roger Seymour (c.1308 – Before 1366), who married Cicely, the eldest sister and heir of John de Beauchamp, 3rd Baron Beauchamp. This may be related to the feudal Barony of Hatch Beauchamp, Somerset, previously held by his father Sir John Seymour.