John III, Duke of Brabant
John III was Duke of Brabant, Lothier (1312–1355) and Limburg.
John's effigy in a seal
Half groat or demi gros of John III, struck Brussels 1326
Margaret of England, Duchess of Brabant
Margaret of England was the tenth child and seventh daughter of King Edward I of England and his first wife, Eleanor of Castile. Her husband was John II, Duke of Brabant, whom she married in 1290, the year of her mother's death. Margaret and John had one child, John III, Duke of Brabant.
Depiction of Margaret on the family tree