Henry Rathbone
Henry Reed Rathbone was a United States military officer and diplomat who was present at the assassination of President Abraham Lincoln. Rathbone was sitting with his fiance, Clara Harris, next to the President and his wife, Mary Todd Lincoln, when John Wilkes Booth entered the presidents box at Fords Theatre and fatally shot Lincoln in the head. When Rathbone attempted to prevent Booth from fleeing the scene, Booth stabbed and seriously wounded him.
Rathbone was born in Albany, New York, one of four children of Jared L. Rathbone, a merchant and wealthy businessman, who later became Albanys mayor, and Pauline Rathbone . Upon his fathers death in 1845, Rathbone inherited the very considerable sum of two hundred thousand dollars. His widowed mother, Pauline Rathbone, married Ira Harris in 1848. Ira Harris was appointed U.S. Senator from New York after William H. Seward became President Lincolns Secretary of State. Harris was a widower with four children whose wife Louisa had also died in 1845. As a result of this marriage, Ira Harris became Rathbones stepfather and his daughter, Clara, became Rathbones stepsister. Although this unusual series of events made them stepbrother and stepsister, they were not related by blood. Rathbone and Harris formed a close friendship and later fell in love. The two became engaged shortly before the American Civil War.
Source: Wikipedia