Yes I have. Col. Vincent was anoother extroardinary person. He was not yet 30 years old when the battle occured.
There are two monuments to Col. Vincent and his likeness on another. The one that I knew about is http://www.gettysburg.stonesentinels.com/Individuals/Vincent.php
The monument that I was talking about is chiseled in to a large rock on Little Round Top. It is right next to the 44th New York monument.
I never knew it was there until the last time I was there. While I was on Little Round Top, a tour guide came through with a group and pointed it out to them.
I can’t find any mention on this one, anywhere.
I found the monument online to Col. Vincent that I was talking about. The tour guide said no one knows exactly when it was put there, but it has been there since 1864.
Here is a link to it:
http://www.brotherswar.com/Gettysburg-Day-2Pic-55.htm
And it is right next to the 44th New York monument.