Born about 1313, Edward was the only son of Thomas of Brotherton, eldest son of King Edward I by his second marriage to Margaret of France (1279?–1318), the daughter of King Philippe III of France (d.1285).
[2][3][1] He had two sisters: Shortly after 29 May 1328, at Hereford, Edward of Norfolk married Beatrice Mortimer, daughter of Roger Mortimer, 1st Earl of March, by Joan de Geneville (d.1356), daughter and coheiress of Sir Peter de Geneville.
[7] The occasion was a double wedding at which the bride's sister, Agnes Mortimer, married Laurence Hastings, later 1st Earl of Pembroke.
[8] The celebrations were accompanied by a magnificent tournament, and were attended by Edward III and his mother, Isabella of France, who was by then the mistress of the bride's father, Roger Mortimer.
[1][8] There was no issue of the marriage,[7] and two years after the ceremony Roger de Mortimer was hanged at Tyburn as a common criminal.