Simon de Montfort (died 1188), sometimes known as Simon IV de Montfort, was lord of
Montfort-l'Amaury
Montfort-l'Amaury () is a commune in the Yvelines department in the Île-de-France region, Northern France. It is located north of Rambouillet. The name comes from Amaury I de Montfort, the first ''seigneur'' (lord) of Montfort.
Geography ...
Count of Évreux
The Count of Évreux was a French noble title and was named for the county of Évreux in the Duchy of Normandy, disputed between Kingdom of France, France and Kingdom of England, England during parts of the Hundred Years' War. It was successively ...
and Lord of Montfort-l'Amaury. On his death, Simon III left the comté of Évreux to his elder son Amaury V, and his French properties in Montfort-l'Amaury and
Rochefort-en-Yvelines
Rochefort-en-Yvelines () is a commune in the Yvelines department, part of the arrondissement of Rambouillet in the Île-de-France region in France.Amicia, daughter of
Robert de Beaumont, 3rd Earl of Leicester
Robert de Beaumont, 3rd Earl of Leicester (1121 – 1190), called Blanchemains, was an English nobleman, one of the principal followers of Henry the Young King in the Revolt of 1173–1174 against his father King Henry II.
Life
Robert was the s ...
. They had two sons and a daughter:
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Simon de Montfort, 5th Earl of Leicester
Simon de Montfort, 5th Earl of Leicester ( – 25 June 1218), known as Simon IV (or V) de Montfort and as Simon de Montfort the Elder, was a French nobleman and knight of the early 13th century. He is widely regarded as one of the great militar ...
His son the 5th Earl is also sometimes known as Simon IV. The discrepancy in numbering arises from confusion between Simon III de Montfort (died 1181) and his son (the subject of this article, died 1188). The latter was historically unknown, and Simon III was believed to be the father (not the grandfather) of the 5th Earl, who is therefore known as Simon IV in some sources and Simon V in others.