Upon his father's death, the younger Simon had traded his interests in the family's French titles with his older brother for the sole possession of the English claims, and moved to England in 1229 to assert them.

Becoming a favorite of Henry III, the younger Simon de Montfort received permission to marry the king's sister Eleanor of England, a jump in social status that alarmed the English nobility.

The final act was played out in a monstrous summer storm, [in] 'such a downpour of rain, such thunder and lightning, ... the darkness was so profound, that though it was dinner-time those who sat down to eat could scarcely see the food before them'.

He stood the shock like a strong tower; but, surrounded by few followers, and overcome by numbers, he fell, and thus terminated an hereditary prowess, rendered famous by many glorious deeds.Henry's brother Simon arrived at Evesham in time to see their father's head mounted on a spear.

They found fortune in the service of Charles of Anjou, and later avenged the deaths of their father and brother by killing Henry of Almain, the nephew of the King, and their own cousin.

As Count of Nola, Guy had two daughters, becoming in time an ancestor to several European royal families, including the British.

Captured by mercenaries in the employ of King Edward, the siblings were eventually released and Eleanor's marriage took place.