Sydenham House, Devon

Sydenham House (anciently Sidelham, Sidraham, etc.) in the parish of Marystow in Devon, England, is a seventeenth-century manor house. The Grade I listed building is situated about thirteen miles south-west of Okehampton, on a 1,200 acres (490 ha) estate. It was built by Sir Thomas Wise (d.1629) between 1600 and 1612, incorporating an older structure. It was partially destroyed by fire in 2012. The gardens are Grade II listed in the National Register of Historic Parks and Gardens.

According to the Domesday Book of 1086, immediately before the Norman Conquest of 1066 the manor of SIDREHA^~ was held by the Saxon magnate Brictric, a great landholder in Devon and more widely in England. Following the Norman Conquest, it was one of the 107 Devonshire landholdings of Juhel de Totnes (died 1123/30), the first Anglo-Norman feudal baron of Totnes and feudal baron of Barnstaple, both in Devon. Juhel's tenant was a certain William. On his banishment by King William Rufus, Juhel's property was confiscated, and Sydenham later became the seat of the de Sydenham family, which as was usual took its name from its seat, whose overlords were the subsequent feudal barons of Totnes. In the 13th century Book of Fees Maurice de Sideham is listed as holding lands in Parva Sideham ("Little Sydenham") (which adjective was used to distinguish it from Sydenham Damerel, also in Lifton Hundred) from Reginald de Vautortes, feudal baron of Totnes, and is recorded by Pole (d.1635) as holding North Sidenham, this manor, in 1242. The de Sydenham family was succeeded by that of de Mauris, from which it passed by marriage to Trevage, and thence to the Wise family, which later was also seated at Mount Wise, Plymouth.

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