John IV, Duke of Brittany

John IV, Duke of Brittany , also known as John of Montfort, was born in 1339 in the region of Brittany . He held citizenship in the Duchy of Brittany and had French nationality . John IV was the child of John of Montfort and Joanna of Flanders . His occupations included serving as a Duke , Count , and Politician . John IV was the father of several children, including Arthur III, Duke of Brittany , Marie of Brittany, Lady of La Guerche , John V, Duke of Brittany , Margaret of Brittany , and Richard, Count of Étampes .

John IV held various titles throughout his life, such as the Count of Montfort from 1345 until his death , and Earl of Richmond from 1372 until his death . He was also known by several nicknames like Yann IV , John IV the Conqueror , Jean IV , John of Montfort , and John V . John IV was the owner of the Château de Dinan .

John IV, Duke of Brittany, passed away on November 1, 1399 in Nantes .