Elthorne was a hundred (ancient subdivision) of the historic county of Middlesex, England. Toponymy The name is a standard contraction in Old English of El(ɘ's) thorn – El likely being a man, perhaps one of the eorls (earls) in the same way as Spelthorne Hundred, adjacent, and the thorn would accurately reflect that most of the land, like Hounslow Heath of today, until and unless manually cleared was covered or underlain as it naturally is here with hawthorns, blackthorns and brambles. The most distinctive of these is the sometimes tree-height genus, the hawthorn, which is in warm months heavy with small white flowers and is endemic to the local gravel-rich soil and banks of rivers across all England save for the north and south-west, where its larger type also extends to. Blackthorns are alongside hawthorns the ancient underlayer of the local Ten Acre Wood, an oak plantation. Antiquaries have suggested a meeting-point tree, in the same way as Ossulstone was a meeting point, however, in the same way as "broom" and "gorse" are used whether the noun refers to single thorn tree is unascertainable. Parishes It was a north-west portion having these parishes: Cranford, and Harlington and West Drayton small parishes north of the south-west projection, Harmondsworth Harmondsworth, the far south-west projection. It as such covered most of the fields and former homes of Heathrow (hamlet) taken up to become London Heathrow Airport Greenford, between Northolt and Perivale in the east Hanwell a strip parish east of Norwood Green. Hayes, the south-east half of which was Norwood, a precinct from the founding of its 12th century chapel, then chapelry until its 1859 upgrade to a parish, during the early centuries seeing its Southall manor build up significantly and build its own community. The first mention of a priest in the precinct of Norwood is of Simon, the chaplain of Southall, in 1394. Yeading developed late in the county in the north of Hayes proper (outside of the precinct). It saw its first mission church in 1890. Hillingdon, a large area, a fairly neat upright rectangle. The western parish with the main indent of the Colne, a braided river. Cowley, a parish scattered about in Hillingdon parish Uxbridge, a chapelry from before 1248 until an 1827 upgrade to a parish. It centred on the town in the west Yiewsley, a chapelry founded on an old hamlet in 1859, made a parish