Editing John I, Duke of Brabant (section)

==Family and children==
[[File:Huwelijk van Jan I van Brabant en Margaretha van Dampierre (Marriage of John I of Brabant and Margaret of Flanders) Brabantsche Yeesten.png|thumb|Marriage of John and Margaret of Flanders from the Chronicle ''Brabantse Yeesten'' by Jan Van Boendaele.]]
John was married twice. On 5 September 1270, he married [[Margaret of France, Duchess of Brabant|Margaret]], daughter of [[Louis IX of France]] and [[Margaret of Provence]].{{sfn|Richard|1992|p=xxiv}} They had a son, but both mother and child died shortly after his birth.

In 1273, John married [[Margaret of Flanders (d. 1285)|Margaret]] (d. 3 July 1285), daughter of [[Guy, Count of Flanders]]{{sfn|Verbruggen|2002|p=8}} and had the following children:
# Godfrey (1273/74 – aft. 13 September 1283).
# [[John II of Brabant]] (1275–1312).
# [[Margaret of Brabant|Margaret]] (4 October 1276{{snd}}14 December 1311, [[Genoa]]), married 9 July 1292 to [[Henry VII, Holy Roman Emperor]].
# [[Marie of Brabant, Countess of Savoy|Marie]] (d. after 2 December 1338), married to Count [[Amadeus V of Savoy]].

John I had several illegitimate children:

# Gillis van der Balcht
# [[:fr:Jean Meeuwe|Jean Meuwe]], Seigneur of Wavre and Dongelberg.<ref>{{cite book|title=Messager des sciences historiques, ou, Archives des arts et de la bibliographie de Belgique|url=https://books.google.com/books?id=KS5JAAAAMAAJ&pg=PA194|year=1889|publisher=Impr. et Lithographie de L. Hebbelynck|page=194}}</ref>
# [[:fr:Marguerite de Tervueren|Margareta of Tervuren]], she was married on 2 March 1292 to [[:fr:Jean de Rode de Lantwyck|Jean de Rode de Lantwyck]]
# Jan Pylyser (1272–1342)
# Jan van der Plasch