Dundonald Earl of Dundonald Iain Cochrane, 15. Earl of Dundonald Dundonald (County Down) John Cochrane, 2. Earl of Dundonald Dundonald Castle Dundonald (South Ayrshire) William Cochrane, 1. Earl of Dundonald Archibald Cochrane, 9. Earl of Dundonald Alexander of Dundonald, 4. High Steward of Scotland Dundonald Castle (Kintyre) Thomas Cochrane, 10. Earl of Dundonald