Agnes Duff, Countess Fife British noble (1829-1869) (1829–1869) Parents Elizabeth Hay, Countess of Erroll William Hay, 18th Earl of Erroll Children Alexander Duff, 1st Duke of Fife Lady Mary Hamilton Duff Lady Ida Duff Agnes Duff Lady Alexina Duff Anne Duff, Marchioness of Townshend Siblings Ida Hay William Hay, 19th Earl of Erroll Alice Hay Partners James Duff, 5th Earl Fife
