Colonel William Fullarton of that Ilk had owned Fairfield, however he sold it before he took up an appointment in
Trinidad circa 1803. The property was held in 1851 by William Gunning Campbell at which time the house had a housekeeper, an undergardner, and two housemaids, in addition to the gardener and his laundress wife who lived at Fairfield Cottage. The property had a walled garden which survives as a ruin (2026) and a cemetery garden which remains in fair condition; the old Scottish unit of land measurement called a "fall" is recorded in the inscription. The last Campbell to live at the estate was W. G. Campbell and from the 1860s the property was run by trustees. Fairfield had been known as "Overmains" and had been a part of the lands of Monkton Castle, latterly known as Monkton House. In the 1860s James Sinclair of Orangefield died and this estate was added to the of Fairfield. The associated farms were Fairfield Mains, Monktonmiln, Muirhouse, Orangefield and West Orangefield. Fairfield was sold in 1950 and demolished by the new owner who had planned to build villas and racing stables. ;Campbell family Cemetery Garden and Lodge File:Fairfield Cemetery dedication, Monkton, Ayrshire.JPG|The 1835 dedication stone File:Fairfield Memorial, Monkton, Ayrshire.JPG|The '2 falls' cemetery garden Christian dedication stone. File:Fairfield Memorial inscription, Monkton, Ayrshire.JPG|The 'Jesus wept' gravestone and inscription of William and Diana Campbell File:Fairfield cemetery mausoleum, Monkton, Ayrshire.JPG|The mausoleum File:Fairfield Cemetery garden, Monkton, Ayrshire.JPG|The cemetery garden railings and walls frontage. File:Fairfield Cemetery garden ornament, Monkton, Ayrshire.JPG|The base of an old sundial File:Fairfield Lodge, Monkton.JPG|Fairfield Lodge == Orangefield House ==