Margaret St. John Peerage person ID=19090 (1308–1361) Parents John St. John, 1st Lord St. John of Basing Isabel Courtenay Children Cicely Beauchamp Eleanor Beauchamp John de Beauchamp, 3rd Baron Beauchamp Siblings Hugh St. John, 2nd Lord St. John of Basing Partners John de Beauchamp, 2nd Baron Beauchamp