  thumb|coat of arms of peter ii peter ii (in breton pÃªr ii, in french pierre ii) (1418â1457, nantes/ naoned), was duke of brittany, count of montfort and titular earl of richmond, from 1450 to his death. he was son of duke john vi and joan of france, and thus was younger brother of francis i. ==biography== thumb|left|peter ii of britain praying before the virgin and child (livre d'heures de pierre ii de bretagne)  while he was count of guingamp, he fought against the english in normandy in 1449 and in 1450 with his brother, francis i, duke of brittany, and his uncle the constable de richemont. they took several cities, including coutances, saint-lÃ´ and ferns. upon the death of his brother in 1450, peter became duke. since francis did not have a son, according to the provisions of the first treaty of guerande (1365) that did not allow the succession of girls, he appointed peter in preference to his own daughters, margaret and marie, to succeed him. peter ii then pursued the murderers of his other brother, gilles. by 1455, peter ii and his wife, blessed frances d'amboise, had failed to produce offspring. given the health problems of peter ii, this raised the question of succession. to prevent the throne of brittany from falling into foreign hands, the duke decides to marry his niece, margaret, daughter of his elder brother francis, to his cousin, francis, count of etampes. to seal this union, the duke summons states of brittany at vannes, which met thursday, november 13, 1455, in the upper room of la cohue. he gathered the main breton lords and bishops, abbots and representatives of cities. all ap
1418_births 1457_deaths Dukes_of_Brittany House_of_Dreux