On my quest for relatives I ordered a copy of the Civil War pension file (certificate #577430) for a Michael Kenna (1845-1904). He was a private in Company C, 74th Regiment of the NY Volunteers from 7 Jul 1861 to 6 Jul 1864. He was born 1845 or 1846 in Ireland to John Kenna and Kate Gleason (both of Ireland), moving to the US around 1854. He was married to Mary Ralph (b. 1842) on 6 Feb 1868 by Rev. Father O'Burn/Byrne at St. Michaels Church in Flushing, NY. They had at least two children: Annie Kenna, b. 13 Feb 1872, and Mary Kenna, b. 9 Mar 1881. Michael died at the age of 58, on 24 Jan 1904, at Laurel Hill, Queens, NY, from a cerebral hemorrhage. He is buried at Calvary Cemetery.
I can't be certain he is a relative, however, his mother's name of Gleason shows up elsewhere in our family tree. Perhaps St. Michaels church or naturalization papers can help prove or disprove a connection.
If you know this man or his relatives, please let me know.
UPDATE: The nice folks at St. Michael's Church did a search for the marriage record and could not find one for them on the date above. :-(