John de Mowbray 4th. Baron Mowbray

   Cause of his death was Died in battle (Fighting against the Turks).

John married Elizabeth de Segrave, daughter of Sir John de Segrave and Margaret of Brotherton Duchess of Norfolk. (Elizabeth de Segrave was born on 25 Oct 1338 in Croxton Abbey, NFK and died in 1368 in LON.)