homestead for the property. Macquarie Grove also has state heritage significance for its association with a number of prominent people and pastoral families. Originally granted by Governor Macquarie to Rowland Hassall, the property was later owned by Henry Carey Dangar MLC and Arthur Macarthur-Onslow. The Macarthur-Onslow family have been long-standing owners of the property and re-purchased portions of the site from the Commonwealth Government in 1987. Macquarie Grove, and the greater Macquarie Grove property, also has associations with the establishment of the Macquarie Grove Flying and Glider School and the operation of the site by the Commonwealth Government as an air-force base during World War II. Following the war, the site has been developed into the Camden Airport. Macquarie Grove was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria. The place is important in demonstrating the course, or pattern, of cultural or natural history in New South Wales. Macquarie Grove has state heritage significance as part of the Macquarie Grove property. At a substantial , the allotment was a very early land grant in NSW and one of the first granted by Governor Lachlan Macquarie in the Cowpastures district. Allocated to Rowland Hassall in 1812, Macquarie Grove was the second residence constructed on the property. Macquarie Grove was, however, the main homestead for the property. The establishment of the Macquarie Grove property predates the formation of the Camden township. The construction of Macquarie Grove occurred during the same period of the establishment of the township (s). The place has a strong or special association with a person, or group of persons, of importance of cultural or natural history of New South Wales's history. Macquarie Grove has state heritage significance for its association with a number of prominent people and pastoral families. The Macquarie Grove property was originally granted by Governor Lachlan Macquarie to Rowland Hassall (a missionary, sheep breeder and later Superintendent of the Cowpastures) who built Macquarie Grove. The cottage was later owned by Henry Carey Dangar MLC (the prominent pastoralist, land owner and racing enthusiast) and finally by Arthur Macarthur-Onslow (great grandson of the district's pioneer John Macarthur). The Macarthur-Onslow family has had an ongoing association with the Macquarie Grove property since the original purchase of the property by Arthur Macarthur-Onslow in 1916. Although the property has been reduced in size by government acquisition of land, the Macarthur-Onslow