Joan of Bar was niece to a a King of England but in which year did he gain this title?
Joan of Bar, Countess of Surrey Joan of Bar (died in 1361, London) was a daughter of Henry III, Count of Bar and Princess Eleanor of England, and niece of Edward II of England. She was unhappily married to John de Warenne, 7th Earl of Surrey. In 1345, Joan became the regent of Bar for her great-nephew Robert.
Marie I de Coucy, Countess of Soissons Marie I de Coucy, Dame de Coucy and d'Oisy, Countess of Soissons (April 1366 – after 3 March 1405) was the wife of Henry of Bar, and the granddaughter of King Edward III of England and Philippa of Hainault. She succeeded to the title of suo jure Countess of Soissons, on 18 February 1397, upon the death of her father, Enguerrand VII de Coucy. In addition to her titles, she also owned numerous estates in North-Eastern France. Mary, Queen of Scots, King Henry IV of France, and the Bourbon kings of France were her direct descendants.