Helen Selina Gifford, countess of, an English poetess, born in 1807, died June 13, 1867. She was a daughter of Richard Brinsley Sheridan, and sister of the duchess of Somerset and of the Hon. Mrs. Norton. She married in 1825 Price Blackwood, a captain in the navy, afterward fourth Baron Dufterin, who died July 21, 1841. In order to be better able to attend her intimate friend, the earl of GifFord, in his illness, she married him in 1862, about ten weeks before his death. She was celebrated for her wit, and in her early days for her beauty, and wrote many songs and ballads, including The Irish Emigrant's Lament" and The Farewell of Terence." The present Earl Dufferin, governor general of Canada, is her eldest son.