http://en.wikipedia.org/wiki/Walter_de_Manny,_1st_Baron_Manny
Walter De Manny, 1st Baron Manny, KG (1310–1372), soldier of fortune and founder of the Charterhouse, was from Masny in Hainaut, from whose counts he claimed descent. Manny — the name is thus spelt by most English writers — was a patron and friend of Froissart, in whose chronicles his exploits have a conspicuous and probably an exaggerated place.