Ludovic de Monson
Ludovic de Monson, styled by Albert of Aix "mirabilis in opere militari," was one of those who entered Jerusalem by means of a vast machine of wood, erected for the purpose of introducing the besiegers within the walls. This was effected, most successfully, by throwing out a portable bridge from the above mentioned machine or tower. Soon after the conquest, a family of this name settled in England, from whom the present Lord Monson is said to descend.
Ludovic is also known as Louis de Mousson. It is likely that Ralph de Mousson was a follower of the Crusader Ludowicus Comes de Montione or Ludowicus de Monzunz filius comitis Tirrici de Muntbiliant who can be identified as Louis de Moussen, a son of Theodoric Count of Bar and Montbeliard.