Alexander III 'the Glorius', King of Scotland was born on 4 September 1241 at Roxburgh, Scotland.
He was the son of Alexander II 'the Peaceful', King of Scotland and Mary de Coucy.
He married, firstly, Margaret of England, Princess of England, daughter of Henry III, King of England and Eleanor of Provence, on 26 December 1251 at York Minster, York, Yorkshire, England.
He married, secondly, Yolande de Dreux, daughter of Robert IV de Dreux, Comte de Dreux and Beatrix de Montfort, Comtesse de Montfort, on 1 November 1285 at Jedburgh Abbey, Roxburghshire, Scotland.
He was also reported to have been married on 14 October 1285.
He died on 19 March 1285/86 at age 44 at Kinghorne, Fife, Scotland, when his horse plunged over a cliff.
He was buried at Dunfermline Abbey, Dunfermline, Fife, Scotland.
He succeeded to the title of King Alexander III of Scotland on 8 July 1249.
He was crowned King of Scotland on 13 July 1249 at Scone Abbey, Scone, Perthshire, Scotland.
He was invested as a Knight on 25 December 1251 by King Henry III of England.
Children of Alexander III 'the Glorius', King of Scotland and Margaret of England, Princess of England:
1. Margaret of Scotland, Princess of Scotland+ b. 28 Feb 1260/61, d. 9 Apr 1283
2. Alexander of Scotland, Prince of Scotland b. 21 Jan 1263/64, d. 28 Jan 1283/84
3. David of Scotland, Prince of Scotland b. 20 Mar 1272/73, d. Jun 1281