Celebrating the passage of the Fifteenth Amendment to Congress in 1870, which granted Black people the right to vote, Robert spoke before an audience of Black and white people at a Cincinnati jubilee and offered his own prophecy, his creed: โKnowledge is power; and those who know the most, and not those who have the most, will govern this country. Let us combine and associate and organize for this end. In the pulpit, in the press, in the street, everywhere let our theme be education, education; until there can't be found anywhere a child of us that is not at the school. With this endeavor carried out, who can measure the progress that may be made in a single generation by a poor, despised, and enslaved race? Then, indeed, would vanish prejudice; then would the noble martyrs of our cause not have died in vain, and human slavery would evermore be an impossibility.โ
Robert believed those words. He imagined his son, Robert James Harlanโwhom he named after James Harlanโliving on equal terms with the scions of privileged white families. Robert Jr. attended Cincinnatiโs largely white Woodward High, where he was classmates with William Howard Taft, and went on to college and law school.
Robert raised his son nearly on his own, and also served as a backstop for the extended Harlan family. When Johnโs older sister, Elizabeth, got married, Robert presented her with the most extravagant of presents, a handmade piano. Afterwards, when one of Johnโs brothers, James Jr., became destitute and an alcoholic, Robert stepped in with multiple levels of support. โBob Harlan has for two years been unusually kind to me, not, however, putting me under any obligation,โ James Jr. reported to John.
In Johnโs case, Robertโs gift was political helpโand he was ideally positioned to help John gain credibility with Republicans who doubted his conversion to their party after the Civil War. In the first dozen years after the surrender of the Confederacy, African-Americans were an important Republican constituency, and Northern Republicans were wary of Southern efforts to push Black people back into positions of subjugation.
In that atmosphere John became entangled in a scandal that jeopardized his national aspirations. It was 1871, and John was in the midst of a futile campaign for governor of Kentucky under the Republican banner. He loyally and steadfastly defended the national party even though it was held in contempt by much of the Bluegrass State. Still, several northerners could only remember the fact that he was from a slave-owning family and had criticized abolitionists before the war. Then came an incident in which Johnโs drunken cousin from his motherโs side of the family shot a prominent Black federal official in Washington. Though the motive may have been personalโthe Black official was advising a person who wanted to sue the cousin over the sale of a faulty stoveโseveral in the Black community saw the case in starkly racial terms.
At the time, judicial matters in Washington were handled by the federal government, and it happened that Johnโs good friend from Kentucky, Benjamin Bristow, was President Ulysses Grantโs solicitor general. When the lawyer for Johnโs cousin let it be known that he had appealed to John for help, several Black leaders smelled a rat. On the hustings in Kentucky, John looked unaware of just how harmful to his future ambitions those rumors could be.

When a drunken cousin of Johnโs shot the renowned Black leader O.S.B. Wall, Johnโs reputation was tarnished. Robert stepped in to smooth the waters with Black leaders, preserving Johnโs image in the Republican Party. | O.S.B. Wall in Joseph T. Wilsonโs The Black Phalanx: A History of the Negro Soldiers of the United States (1890).
Robert did, and rushed to the capital from his own home in Cincinnati to quell the damage. The victim, Orindatus S. B. Wall, was a Civil War veteran and fellow member of the African-American elite. Wallโs brother-in-law was John Mercer Langston, the founding dean of Howard Law School. Robert was friends with both of them, along with Amanda Wall, who believed her husband had been shot โbecause he was a colored man and held an office,โ as Robert frankly reported to John.
Robert suggested the whole situation was more serious than John believed, noting that Langstonโwho had the clout to raise a ruckusโbelieved that โyou had written to the president and โฆ authorized other parties to draw on you for large amounts of money for the purpose of clearingโ his cousin James Davenport.
Robert proposed a different approach. He defended John to Black leaders in Washington as guilty of nothing more than attempting to spare his family from embarrassment. But, Robert assured them, John had no illusions concerning the wrongness of his cousinโs actions. Robert, too, had known Davenport โnearly from childhoodโ and described him as having been damaged by the war, in which he fought on the Union side. Robert then brokered a deal: If Davenport were to go free, the Harlan family would guarantee that the troubled man would never set foot in the District of Columbia again. Thus, he would plead guilty to assault with an intent to kill, but President Grant would pardon him on the grounds that he wasnโt in possession of his faculties. The Walls and Langstons kept quiet, and the Harlans satisfied their end of the bargain.