Matthews bought Celtic Manor in 1980, ploughing £100m into the project. Firstly the 19th century Manor House was renovated, while in 1991 plans were unveiled to develop two new golf courses and a convention centre between the manor and the River Usk. Matthews had become friends with golf course architect, the late Robert Trent Jones Snr, whose family roots were in Aberystwyth. Work began on the 'Roman Road' course in 1992, named after the main route connecting the former Roman fortress of Caerleon with the town of Caerwent, which crosses the land. In 1994 the 4,000-yard 'Coldra Woods' golf course was started, as well as the £10m golf clubhouse hotel.