The Williams family of Caerhays, Burncoose and Scorrier were prominent owners of mines and smelting works for several generations during the Cornish Industrial Revolution. A branch of the family settled in Port Hope, Ontario, where they became well-known.
The family developed williamsii hybrid camellias and fine gardens at Burncoose, Gwennap ; St Michael Caerhays and Scorrier House in Cornwall, United Kingdom.
Caerhays Castle is a mock-mediaeval castle, designed by John Nash on the south coast of Cornwall, at St Michael Caerhays, between Truro and St Austell. The garden holds the NCCPG National Magnolia Collection. It was bought by the Williams family, who still own it. The gardens are open to the public each year during March, April and May.
Scorrier House was built by John Williams the Third in 1778 as the principle residence of the Williams family, who still live there. Enlargements were made in 1845 and 1908 following a fire that gutted parts of the house. The garden is also of note, much of it having been planted by William Lobb, a famous Victorian botanist and plant hunter. Today, Scorrier House can be hired for wedding receptions, private parties and corporate and outdoor events. The garden can be visited by appointment only.