Wall (1825-1891), was an American attorney and politician who was born into slavery but, during the American Civil War, became the first black man to be commissioned as captain in the Regular U.S.
Army.
One of several mixed-race children of a white planter, Wall and others were freed by their father, given a bequest and guardian, and sent to Ohio to be educated at Oberlin College.
After the war, Wall read the law and passed the bar.
Wall moved to Washington, DC, where he practiced law and was appointed as the city's first black justice of the peace and a police magistrate.
He was twice elected to represent a white-majority district in Washington's legislative assembly.
His family were among the elite African Americans in the capital.