Mary Campbell noblewoman; (1795-1862) (1795–1862) Parents Mary Campbell, Marchioness of Breadalbane John Campbell, 1st Marquess of Breadalbane Children Richard Temple-Nugent-Brydges-Chandos-Grenville, 3rd Duke of Buckingham and Chandos Anna Gore-Langton Siblings John Campbell, 2nd Marquess of Breadalbane Lady Elizabeth Campbell Partners Richard Temple-Nugent-Brydges-Chandos-Grenville, 2nd Duke of Buckingham and Chandos