b. 25/07/1841 Bristol, Pennslyvania. d. 16/07/1905 Boise, Idaho.
DATE OF MOH ACTION: 01/04/1865 Five Forks, Virginia.
Blackmar was born in Bristol, Pennsylvania. He enlisted into the 15th Pennsylvania Cavalry in 1861 and participated in various endeavors in the Western Army and in the Army of the Potomac. After his involvement in the Battle of Antietam he was successively promoted to Corporal and then first lieutenant in charge of Company H of the 1st West Virginia Volunteer Cavalry. It was during this time, on 1 April 1865, that he formed a line and charged into the Confederate forces, causing them to disperse. For this act he was awarded the Medal of Honor.
Blackmar mustered out of the army at the conclusion of the war and went out to study law at the Harvard Law School. He served as a lawyer and then, upon retirement, as judge advocate to several Massachusetts governors. He was later elected Commander-in-Chief of the Grand Army of the Republic in 1904 and died in office on 16 July 1905.
At a critical stage of the battle, without orders, led a successful advance upon the enemy.
BURIAL LOCATION: CEDAR GROVE CEMETERY, DORCHESTER, MASSACHUSETTS.
Prospect Section 10, Lot 52, Grave 6