According to Wikipedia this is, "Adeliza Georgiana Le Poer Trench (née Hervey), Countess of Clancarty (17 August 1843 – 7 November 1911) an English noblewoman born in Ickworth, Suffolk, England to Frederick William Hervey, 2nd Marquess of Bristol and Lady Katherine Isabella Manners. On 29 November 1866 Adeliza married Richard Somerset Le Poer Trench, 4th Earl of Clancarty. They had three children." Clancarty is composed of Counties Galaway and Cork, Eire that, at least in the 21st century are not contiguous.
Posted to Live Journal lamodeillustrée blog by katmax1 on 10 July 2010; detail-enhanced by gogm. I also removed spots throughout the image with Photoshop.