Charles I, Duke of Brittany

Charles I tied the nuptial knot with Joanna of Penthievre, heiress and niece of Duke John III. The couple was blessed with five children, John (Jean) I of Châtillon, Guy, Henri, Marie and Marguerite.

Charles breathed his last on September 29, 1364 in the Battle of Auray. The battle also marked the end of the Breton War of Succession with the victory of the Montforts.

Posthumously, Charles was canonized as a Saint of the Roman Catholic Church. However, his canonization was nullified by Pope Gregory XI upon request from his successor, Duke John V of Brittany, one of Charles enemies.

Charles of Blois Chatillon was born around 1319 to Guy I of Blois-Chatillon, the Count of Blois and Margaret of Valois. His mother was the sister of King Philip VI.

Since an early age, Charles was extremely religious and pious. His commitment in God was so strong that in later years it proved beneficial in infusing loyalty and devotion among his soldiers.

Charles used extreme measures to express his devout state of devotion. He would keep himself constantly discomforted by putting pebbles in his shoes and tying ropes underneath his clothes so as to remain close to God. What’s more, he confessed his sins every night so as to sleep peacefully.

In 1337, Charles married Joanna of Penthievre. She was the heiress and niece of Duke of Brittany,John III. The marriage was basically an agreement to form a political and military partnership.

After the death of John III in 1341, Charles claimed the title of Duke of Brittany from the House of Penthievre. However, John de Montfort, his uncle refused to recognize his claim to the dukedom.

Rejection from John de Montfort led Charles to resolve the issue amicably between the two by making peaceful negotiations with the former. However, John’s rigidity and lack of flexibility led to the commencement of the Breton War of Succession.

During the Breton War of Succession that lasted for twenty long years, Charles sought the support of the peerage of France to be recognized as the sole heir to the duchy, while John took the aid of Edward III.

In 1341, Charles seized the city of Nantes and imprisoned John for four years. In 1343, Pope Clement VI intervened, thus preventing Edward III from attacking Nantes by negotiating a truce.

The religious fervour of this Duke of Brittany was such that he ordered his soldiers to attend Holy Mass regularly. He is quoted telling his soldiers, ‘We can afford to lose castles, but we cannot let a day go by without attending Holy Mass.’