Blanche of Castile (4 March 1188 – 27 November 1252), was a Queen consort of France as the wife of Louis VIII. She acted as regent twice during the reign of her son, Louis IX. She was born in Palencia, Spain, 1188, the third daughter of Alfonso VIII, king of Castile, and Eleanor of England. Eleanor was a daughter of Henry II of England and Eleanor of Aquitaine.
Margaret of Anjou (23 March 1430 – 25 August 1482) was the wife of King Henry VI of England. As such, she was Queen consort of England from 1445 to 1461 and again from 1470 to 1471. She also claimed to be Queen consort of France from 1445 to 1453. She was one of the principal figures in the series of dynastic civil wars known as the Wars of the Roses and at times personally led the Lancastrian faction. Due to her husband's frequent bouts of insanity, Margaret ruled the kingdom in his place.
Margaret (9 April 1283–26 September 1290) was Queen of Scots and a Norwegian princess, also known as Margaret of Scotland and the Maid of Norway. Margaret was queen from 1286 until she died in 1290. Her death while traveling to Scotland, sparked off the disputed succession which led to the Wars of Scottish Independence.
Mahaut or Matilda II of Boulogne (died 1260) was Countess of Boulogne in her own right and Queen of Portugal by marriage to King Afonso III from 1248 until their divorce in 1253. She was the daughter of Ida, Countess of Boulogne and her husband and co-ruler Renaud, Count of Dammartin. She succeeded her mother as Countess of Boulogne in 1216. She was also the great-granddaughter of Stephen of England.