Walter Manny, 1st Baron Manny
Walter Manny (or Mauny), 1st Baron Manny, KG (c. 1310 – 14 or 15 January 1372), soldier of fortune and founder of the Charterhouse, was from Masny in Hainault, from whose counts he claimed descent.
Source: Wikipedia — Walter Manny, 1st Baron Manny (CC BY-SA 4.0)