Here's the link to the news story.
Cheney’s great-grandfather was Capt. Sam Fletcher Cheney, born in Boscawen in Merrimack County, N.H., in 1829. He was an aide-de-camp to Col. William Sirwell, commander of the 3rd Brigade, 2nd Division of the XIV Corps.
The vice president will be on hand for the opening ceremonies, according to Ed Hooper, editor and publisher of The Civil War Courier. The Courier, a national Civil War publication based in Morristown, is sponsoring the five-day event.
Dick Cheney and his wife, Lynne, have spent much time learning of the career of Sam Cheney. They even commissioned a painting of the vice president’s ancestor based on a photo in Cheney family archives.
[In the portrait, Dick Cheney is standing behind Sam, scowling...or smiling. No one can quite tell.]
[That last part was my own addition. So is this one.]