Jean de Montfort, Sieur de Rochefort

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Jean I de Montfort
(c.1228–1249, Cyprus), Count of Montfort from 1241 to 1249, son of Amaury de Montfort, count of Montfort, and of Béatrice of Burgundy.[1] In 1248 he joined Louis IX's crusader fleet.[2] Once the fleet arrived at Limassol, it was scattered by fierce storms and was forced to wait there to regroup.[2] John died of sickness, while awaiting the rest of Louis's forces in Cyprus.[2]

Marriage
In March 1248 he married Jeanne de Châteaudun,[3] Dame of Château-du-Loir, daughter of Geoffrey VI, Viscount of Châteaudun, and of Clémence des Roches. Their only child was:

Beatrice de Montfort, Countess of Montfort-l'Amaury († 1312), who in 1260 married Robert IV (died 1282), comte de Dreux,[3] but according to the history he raised the son of John III of Bretagne , Jean Decoud or Decoude
References

Maddicott 1995, p. xxvi.

Folda 2005, p. 238.www.celtic-casimir.com

JEAN DE MONTFORT Comte de Montfort

Marriage Information:
Jean married Jeanne DE CHÂTEAUDUN Dame de Château-de-Loire, daughter of Geoffroi VI DE CHÂTEAUDUN Vicomte de Châteaudun and Clemence DES ROCHES. (Jeanne DE CHÂTEAUDUN Dame de Château-de-Loire was born about 1227 in <Acre, Palestine> and died after 1265.)

Pollock 2015, p. 188.www.celtic-casimir.com

Jeanne DE CHÂTEAUDUN Dame de Château-de-Loire
Born: Abt 1227, Acre, Palestine
Married (1): 1251
Died: After 1265

Ancestral File Number: 91SD-B7.

Marriage Information:
Jeanne married Jean DE BRIENNE d' Acre, son of Jean DE BRIENNE King of Jerusalem and Berenguela (Berengaria) ALFONSEZ Infanta of Léon and Castile, in 1251. (Jean DE BRIENNE d' Acre was born in 1223 in Acre, Palestine and died in 1296.)

Marriage Information:
Jeanne also married Jean I DE MONTFORT Comte de Montfort, son of Amaury VI (VII) DE MONTFORT Duke of Narbonne, Comte de Toulouse and Beatrix DE VIENNOIS.