Lady Margaret Kerr (died 1645) (1580–1645) Parents Mark Kerr, 1st Earl of Lothian Margaret Maxwell Children Sir William Hay Robert Hay John Hay, 1st Earl of Tweeddale Margaret Hay Siblings Robert Kerr, 2nd Earl of Lothian Lady Lilias Kerr Lady Elizabeth Kerr Lady Isabel Kerr Sir Mark Kerr Sir William Kerr Lady Jean Kerr Lady Janet Kerr Partners Andrew Kerr, Master of Jedburgh James Hay, 7th Lord Hay of Yester