Once called Old Georgetown Cemetery, Haire Cemetery has few burials and many of those are lost to time and the elemtns. Fortunately Wilbur Bement (1834-1891) is not among the lost.
David Gitchel (1837-1861) was one of the very first casualties of the regiment.
He died at Camp Blair, near Chain Bridge, just a few weeks after the 3rd Michigan arrived outside of Washington, DC. The marker is most likely a cenotaph.