<page_title> List of rulers of Brittany </page_title> <section_title> Breton War of Succession </section_title> <table> <cell> Charles I (Charlez Iañ) 1341–1364 with Joan <col_header> Name </col_header> </cell> <cell> c. 1319 Blois second son of Guy I, Count of Blois and Margaret of Valois <col_header> Birth </col_header> </cell> <cell> 29 September 1364 Auray aged 44–45 <col_header> Marriages </col_header> </cell> </table>
Charles of Blois (1319 – September 29, 1364), was the Duke of Brittany from 1341 to his death.