Lady Isle is a small, uninhabited island, in the Firth of Clyde, Scotland. It was once home to a chapel dedicated to Saint Mary. The island features a lighthouse and a freshwater spring.GeographyLady Isle lies some 2 miles SW of Troon. The island is around 0.6 kilometres along its length and rises to a maximum height of just 6 metres. Half tide, Scart rocks and Seal rock are associated with Lady Isle. The island lies in the parish of Dundonald in South Ayrshire.HistoryEvidence from old mapsTimothy Pont's map of 1604 - 1608 published in 1654 by Joan Blaeu, marks Lady Isle by that name and indicates that a structure is present on the island, presumably the chapel. In c. 1636 - 1662 Robert Gordon's manuscript map marks the isle as 'Lady Yle' and shows two islands. John Adair in his 1686 A mape of the west of Scotland containing Clydsdail, Nithsdail, Ranfrew, Shyre of Ayre, & Galloway. shows Lady Isle as Mary Isle and indicates a chapel as being located on the island. In 1745 Moll used the name Lady Isle.Written historyWhen Edward I of England came to Ayr in 1299 following the burning of the Barns of Ayr, Hermingford, an old chronicler of the period, records that:It is thought that the name Isle of Ayr refers to Lady Isle.The Geographical Collections relating to Scotland state: