Margaretha van Mechelen
Margaretha van Mechelen was a noblewoman of the Southern Netherlands and the mistress of Maurice of Nassau, Prince of Orange, with whom she had 3 sons:
- Willem of Nassau, lord of the Lek
- Louis of Nassau, lord of De Lek and Beverweerd
- Maurice of Nassau
Though Maurice refused to marry her, he did state his intent to do so from his death bed. This would threaten his half-brother Frederick Henry's place in the succession and so Frederick Henry summoned Amalia of Solms-Braunfels and married her a few days before Maurice's death.