William Adelin

William Ætheling (Middle English: [ˈwiliəm ˈaðəliŋɡ], Old English: [ˈæðeliŋɡ]; 5 August 1103 – 25 November 1120), commonly called Adelin (sometimes Adelinus, Adelingus, A(u)delin or other Latinised Norman-French variants of Ætheling) was the son of Henry I of England by his wife Matilda of Scotland, and was thus heir apparent to the English throne. His early death without issue caused a succession crisis, now known in English history as the Anarchy.

Source: Wikipedia — https://en.wikipedia.org/wiki/William_Adelin