Lord John Grey of Pirgo English courtier (16th century) (1523–1564) Parents Margaret Wotton, Marchioness of Dorset Thomas Grey, 2nd Marquess of Dorset Children Jane Grey Margaret Grey Elizabeth Grey Henry Grey, 1st Baron Grey of Groby Siblings Henry Grey, 1st Duke of Suffolk Leonard Grey Lady Catherine Grey Lord Thomas Grey Elizabeth Grey Ann Grey George Medley Mary Grey Lady Margaret Grey Partners Mary Browne