Joan of Bar was niece to a a King of England but in which year did he gain this title?
Edward II of England Edward II (25 April 1284 – 21 September 1327), also called Edward of Caernarfon, was King of England from 1307 until he was deposed in January 1327. The fourth son of Edward I, Edward became the heir to the throne following the death of his older brother Alphonso. Beginning in 1300, Edward accompanied his father on campaigns to pacify Scotland, and in 1306 he was knighted in a grand ceremony at Westminster Abbey. Edward succeeded to the throne in 1307, following his father's death. In 1308, he married Isabella of France, the daughter of the powerful King Philip IV, as part of a long-running effort to resolve the tensions between the English and French crowns.
Judith of Flanders Judith of Flanders (or Judith of France) ( 843 – c. 870) was queen consort of Wessex and countess consort of Flanders. She was the eldest daughter of the West Frankish King and later Holy Roman Emperor Charles the Bald and his wife Ermentrude of Orléans. Through her marriages to two Kings of Wessex, Æthelwulf and Æthelbald, she was twice a queen. Her first two marriages were childless, but through her third marriage to Baldwin, she became the first Countess of Flanders and an ancestor of later Counts of Flanders. One of her sons by Baldwin married Ælfthryth, a daughter of Æthelbald's brother, Alfred the Great. She was also an ancestor of Matilda of Flanders, the consort of William the Conqueror, and thus of later monarchs of England.