[1] Colonel John Boyle in 1806 had the mansion house built to a Georgian design, backing onto the River Irvine.

[4] In 1896 the OS map shows a large walled garden, Shewalton Mains Farm and lodges at the end of the East, West and Mid drives.

[6] George Frederick Boyle (1825–1890) was the 6th Earl of Glasgow and by 1888 he had bankrupted the estate through generous endowment of the Tractarian movement of churches in Scotland, particularly his funding of the Cathedral of The Isles on Great Cumbrae.

[11] Patrick Boyle, born in 1690, was raised to the bench as Lord Shewalton in 1746, was son of David, the first Earl of Glasgow.

[12] He died on 4 February 1853 and was buried at Shewalton, however a memorial to him resides at the family burial plot in Dundonald Church (See photograph).

[16] In 1865 Shewalton House was the property of a Messrs. Archibald Kenneth and Sons, Dreghorn, who owned the nearby Montgomeryfield and other coal pits in Ayrshire.

[17][18] A number of prehistoric artifacts have been found on Shewalton Moor, including an urn, ornamented hand-made pottery, flint scrapers, drills, and arrowheads of several different designs.

[24] The two storey mill at Shewalton was operated via a sluice in the substantial weir and it had two waterwheels; unusually these were both fully enclosed and slate roofed.

[25] A glacial erratic boulder in the old mill yard survives in situ and is recorded on OS maps, used it seems as a loupin on stane.

Coal mining provided employment on a large scale in North Ayrshire from early in the 19th century.

[26] A colliery was located near the west lodge with a mineral railway line shown as crossing the river at this point in 1925.

[27] A. Kenneth and Sons's Shewalton collieries 3 and 4 were at Drybridge, opening in 1924 to produce house coal, employing around 180 miners until closure in 1955.

[28] Shewalton Collieries 5 and 6 opened in 1933 and closed in 1950 with a workforce of around 150, mining house coal, which was also taken to the Montgomeryfield screening plant and washer.

The factory produces glossy paper for magazines and other publications, using china clay brought in by train from Cornwall.