Mary Howard, Duchess of Norfolk (née Blount; c. 1712 – 1773), was the wife of Edward Howard, 9th Duke of Norfolk. According to the astronomer William Wales, she had asked the explorer Captain James Cook to have an island named after her; he had not heard about the Duchess's death when he discovered Norfolk Island and named it in her honour.
Mary Tudor, daughter of Henry VII. Detail of Mary from a manuscript depicting Mary and her first husband, the aged Louis XII of France. Mary (1496-1533) married Louis in October 1514; the marriage was brief as Louis died the following January
Deborah Cavendish née Freeman-Mitford (1920), Duchess of Devonshire. Married to Andrew 11th Duke