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Selham was listed in the Domesday Book (1086) in the ancient hundred of Easebourne as having six households: two villagers, two smallholders and two slaves; resources included ploughing land, woodland and meadows, and a value to the lord of the manor of just over £3.
In 1861, Selham was still a separate parish covering 1,042 acres (422 ha) with a population of 123.
In February 2010, James Packer won approval from Chichester District Council for a 327-acre polo complex to be built at Manor Farm on land owned by Lord Cowdray, not far from Great House Farm, the 38-hectare polo complex at Stedham, owned by his father Kerry Packer during the 1980s. Packer withdrew after the 2012 season, with the facilities being taken over by Sheikha Maitha bint Mohammed bin Rashid al-Maktoum.
The church of St James is largely 11th century, having never undergone any major rebuilding, but it was restored in the 19th century. From 1922–27 Frank Buttle was rector of Selham with South Ambersham.
- "Open Domesday: Selham". Retrieved 18 June 2019.
- "GENUKI: Selham". Retrieved 18 June 2019.
- "Packer polo plans revival attempt". Lynn News. 12 April 2011. Retrieved 16 September 2015.
- Sherwood, Bob (15 June 2013). "James Packer packs up in England after rain-sodden season". Polo. Retrieved 16 September 2015.
- "GENUKI: The Parish Church of St James, Selham". Retrieved 19 June 2019.
- "Buttle: History". Retrieved 29 December 2017.
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