Katherine Grey noblewoman; Potential successor to the English throne (1540-1568) (1540–1568) Parents Frances Grey, Duchess of Suffolk Henry Grey, 1st Duke of Suffolk Children unknown daughter Seymour Edward Seymour, Viscount Beauchamp Thomas Seymour unknown Seymour Siblings Lady Jane Grey Mary Grey Elizabeth Stokes Partners Henry Herbert, 2nd Earl of Pembroke Edward Seymour
