Cathays Lord Windsor) on 12 November 1766, he inherited great further lands including in Cathays to the north of his existing estate which he had partially had developed. He then bought other properties and farms, to the north and east, including what became Cathays Park. There he built Cathays House at a cost of £40,000 and at further cost landscaped Cathays Park. After his son took over the title he preferred to live in Cardiff Castle so demolished the house in 1815, and turned Cathays Park into purely enclosed parkland used for grazing. Following the 2nd Marquis' development of Cardiff Docks,
Fairwater, Double Bay chairman of this company. The Josephs returned to occupy the house in 1890 and continued to reside there for most of that decade up to 1897 when the house was again tenanted, initially in 1897 by Thomas Buckland (the son of the merchant, pastoralist, and banker - Thomas Buckland), and then by the Royal Navy for the years 1899 and 1901. The Fairfax family ownership of "Fairwater", which continues to this day, commenced in late 1900 with the assignment of the leasehold of 2 acres and 13 perches to James Oswald Fairfax. The purchase price of the leasehold title was