Margaret of Brieg was a daughter of Ludwik I the Fair and his wife, Agnes of Sagan. She was Duchess consort of Bavaria by her marriage to Albert I, Duke of Bavaria. Wikipedia
Born: 1342
Died: 1386 (age 44 years), The Hague, Netherlands
Great-grandparents: Judith of Habsburg, Wenceslaus II of Bohemia, Henry V, Duke of Legnica, and more
Parents: Louis I of Brzeg and Agnes of Głogów-Żagań
Children: Joanna Sophia of Bavaria, Katherine of Bavaria, Margaret of Bavaria, and more
Great grandchildren: Marie of Cleves, Duchess of Orléans, Charles the Bold, Isabella of Bourbon, and more
Grandchildren: Jacqueline, Countess of Hainaut, Philip the Good, Mary of Burgundy, Duchess of Cleves, and more