CONYNGHAM, Redmond, antiquarian, born in Philadelphia, Pennsylvania, 19 September, 1781; died in Lancaster county, Pennsylvania, 16 June, 1846. He inherited from his paternal grandfather an estate in the county Donegal, Ireland, yielding £2,000 a year, and subsequently spent some time in Ireland. During his stay abroad he became intimate with Curran, Grattan, and other prominent Irishmen, including his cousin, William Conyngham Plunket, afterward lord-chancellor of Ireland. On his return to the United States he settled m Luzerne county, Pennsylvania, and for several years represented that district in the state legislature, he then removed to Lancaster county, where he resided until his death. Mr. Conyngham devoted much of his leisure to antiquarian research, and contributed valuable papers of historical interest to the American philosophical society and to the Historical society of Pennsylvania, of which he was a member. He made a specialty of the early history of Pennsylvania and the aborigines of Lancaster county.