Arthur O'Connor
From Philosopedia
O’Connor, Arthur (afterwards Condorcet) (1768–1852)
O’Connor, who was born in Cork, joined the United Irishmen and went to negotiate for military aid. In 1798 he was tried for treason, but acquitted. He entered the French service and rose to distinction.
In 1807, he married Elisa, the only daughter of Condorcet, whose name he took and whose works he edited. O’Connor also defiantly edited the freethinking Journal of Religious Freedom during the restoration.