I am the descendant of Henry Dunham, brother of James Jr. I heard from anectdotes told to me by my father (Berman Sherman Dunham b. 1887 in Darke County), that his grandfather Henry and Henry's brother James "came up from the south" (I assume south means Miami Co), and went to work as carpenters/coopers for John Martin who was a miller with a new mill near Greenville. Henry married Sarah Jane Martin, John's daughter. They had 2 children, Alice - born late 1850's (who I met when she was a centenarian, died at age 104 in 1962-3); and John Harvey, known as "the Little Colonel". He even shows up at age 2 in the 1860 census as "Col". Anyway, James Sr., the father of the brothers certainly was a fifer in the war. My dad, Berman, said he was told James Sr. volunteered but was considered too old to carry a weapon so was taken on as a fife player. Neither of the 2 brothers came home from the war, sadly, as we know. Henry did not die in battle, according to my Dad, he contracted Typhoid Fever in Northern Virginia in winter camp (as so many others did) and died. His body was sent home and he is buried in Darke County. Berman tells of seeing James Sr. in a 4th of July parade of Civil War Veterans in Greenville or Woodington, when Berman was a very little boy. ca. 1890? Is this possible? He described to me a very old gentleman with long grey beard, riding in a carriage with other veterans in the parade. He was told by his Dad, "Colonel" Dunham, that this was his great-grandfather, James Sr. the fifer.
Well, hope this sheds some light on your research, as yours is greatly appreciated by me, Janee Tellechea