The Frogmore Estate was granted to Mary Putland (nee King) in 1806 and enlarged in 1810. She married her second husband Maurice O'Connell and together they retained ownership of the property until 1840. This house retains very little of the original house built around 1830 by Maurice & Mary O'Connell. The upper floor additions were added in the 1930s when the property was owned by Alan and Laura Williams. The State Government acquired it in 1954 as a school for mentally handicapped boys. The site is now the northern campus of the University of Western Sydney and the house has since become the Chancellory office and has been renamed Frogmore.
