According to the Genealogical Record of the Barnum Family, Ephraim Kirby was a prominent officer in, and one of the founders of, the "Cincinnati."
The Society of the Cincinnati was a hereditary, military, and patriotic organization formed in May 1783 by officers who had served in the US Revolutionary War. Its objectives were to promote union and national honor, maintain war-born friendships, perpetuate the rights for which its members had fought, and aid members and their families in case of need. The society took its name from the Roman citizen-soldier Lucius Quinctius Cincinnatus.
With membership open to Revolutionary officers and their eldest male descendants, the society organized branches in each of the 13 states; General George Washington was elected its first president. Through lack of heirs, most state societies were dormant by 1835, but a revival was effected at the end of the 19th century. The city of Cincinnati, Ohio, was named in honor of the society in 1790.