From The West Wiltshire District Guide 1978:
Knook, about a mile east of Heytesbury, is, like Tytherington, probably smaller now than it has been for centuries. The population today is approximately 60, but many years ago there were 300 people in Knook, when many of the weavers and clothworkers of Heytesbury lived there. There are still two weavers’ cottages standing, restored and modernized.
The ancient manor was about 1,250 acres in extent, and its history is confused. Three lords are mentioned as having manorial rights – the Earls of Gloucester, the Lords Bedlesmere of Heytesbury, and the St. Martins, Lords of Wardour. After these names, many others appear as owners or part owners.
Knook now consists of two farms, the Manor House and about 25 houses and cottages. The Manor House, on the banks of the river Wylye, between the river and the church, is a Tudor building of stone with gabled ends, gabled porch and stone mullioned windows, and, since its restoration, is a very attractive house. The range overlooking the river is buttressed and is pre-Reformation; the range with the porch is dated 1637. The house has never been part of a monastery as some have said, but it was for a time divided into cottages.