There were once two little boys - they met when they were both quite young; one was born in what’s now Switzerland, by Lake de Neuchâtel, his name Othon de Grandson, and the other was born in London, his name Prince Edward, son of King Henry the third of that name. Othon was probably born in 1238, and Edward, we know, in June 1239. These two little boys grew up and had adventures together. They took the cross together, the ninth crusade in 1271 and 1272. Othon reputedly sucking poison from Edward when the latter was attacked by an assassin. In 1277 and 1278, they fought the First Welsh War against the House of Gwynedd, Othon doing much to negotiate the Treaty of Aberconwy in 1278, which ended hostilities. When war broke out again in 1282 they fought the Second Welsh War together. Othon led Edward’s army across the Bridge of Boats from Anglesey and was the first to sight the future sites of castles at Caernarfon and Harlech. Edward made his friend the first Justiciar (Viceroy) of North Wales. When Edward and Othon went to Gascony in 1287, Othon stayed in Zaragoza as a hostage for Edward's good intentions between Gascony and Castille.

Later, in 1291, when Acre was threatened by the Mamluks, Edward sent Othon as head of the English delegation of knights. When Acre finally fell to the Mamluks bringing the Crusades to a close, who was the last knight onto the boats? Othon de Grandson, helping his old friend, the wounded Jean de Grailly onto the boat. When Othon returned from the East, he found England at war with Scotland and France; he would spend his last years in Edward’s service building alliances and negotiating peace before retiring to his home in what is now Switzerland after the king’s death in 1307. Grandson lived in the time of Marco Polo, Giotto, Dante, Robert the Bruce, and the last Templars. He was right there at the centre of the action in two crusades: war with Wales, Scotland, and France, the Sicilian Vespers, and suppression of the Templars; he walked with a succession of kings and popes, a knight of great renown. This is his story.