Who married Margaret, Countess of Soissons?

Margaret (or Margaretha) of Soissons (died 1344) was ruling Countess of Soissons in 1305-1344.

She was the only daughter of Hugh, Count of Soissons, and Johanna of Argies. In 1306 she succeeded her father as Countess of Soissons.

Margaret was married to John of Beaumont, son of John II, Count of Holland. Margaret and John had five children:

• Johanna of Hainault (1323–1350), married first to Louis II, Count of Blois, (three sons), and second to William I, Marquis of Namur, no issue.
• John, Canon of Cambrai.
• William, Canon of Cambrai, Beauvais and Le Mans.
• Amalrik, Canon of Cambrai, Dole and Tours.
• Reinout, Canon of Cambrai.

Upon their marriage, John became Count of Soissons, jure uxoris.

Jan van Beaumont (Valenciennes, ca. 1288 – aldaar, 11 maart 1356), ook bekend als Jan van Blois en Jan van Henegouwen, was heer van Beaumont, Noordwijk, Gouda, Schoonhoven en Chimay en graaf van Soissons. Zijn gevechten, toernooien en avonturen waren dankbaar materiaal voor kroniekschrijvers als Jean Froissart. Hij was een jongere broer van graaf Willem III van Holland.