Charles Grimké Cosslett was born in the United States around 1773, the son of Charles Mathews Cosslett (d. 1776), who served as a justice of the court of common pleas in Charleston, South Carolina, prior to the Revolution, and his wife, Ann Grimké. Around 1783, the Cosslett family moved to Dublin, Ireland, where Charles G. Cosslett later attended Trinity College, graduating in 1795. During the final two years of his studies, Cosslett traveled throughout the British Isles. He lived in Nutgrove, County Down, for much of his later life and died there on January 23, 1853.
From the guide to the Charles Grimké Cosslett collection, Cosslett, Charles Grimké collection, 1794-1795, (William L. Clements Library, University of Michigan)