 On 8 July 1290, John married Margaret of England in Westminster Abbey, London.<ref>Oude Kronik van Brabant, p. 71.</ref><ref>Annales Halesiensibus 1290, MHG SS XVI, p. 483.</ref><ref>Florentii Wigornensis Monachi Chronicon, Continuatio, p. 243.</ref><ref>Stubbs, W.(ed.