Senator Ira Harris was the link that put both his daughter and his stepson in Abraham Lincoln's box at Ford's Theatre on 14 April 1865, the night Lincoln was shot there.
Ira Harris (1802–1875) was a New York judge and law professor who became a U.S. Senator for New York in 1861, taking the seat of William Seward when Seward became Lincoln's Secretary of State [1].
In the Senate he sat on the committee that drafted the Fourteenth Amendment, a change to the U.S. Constitution. He was one of President Lincoln's most frequent evening visitors, so often asking for government posts to be handed out (patronage favours) that Lincoln joked about checking under his bed for him. Mary Todd Lincoln wrote in March 1865 that he had been 'so kind a friend' she felt he was family, though he had once upset her by asking why her son Robert was not in the Army.
In 1848, after both were widowed, he married Pauline Rathbone, mother of Henry Rathbone. That made Henry the stepbrother of Harris's daughter Clara. By 1865 Henry and Clara lived under his roof and were engaged, and on 14 April 1865 the Lincolns' carriage picked them up at the Harris house on the way to Ford's Theatre. One 1971 account suggests Henry first came to know the Lincolns through him. His son William later raised Henry and Clara's three children after Henry killed Clara in Germany in 1883.
His family ties explain why his daughter and stepson were in the box when Lincoln was shot. No record has been found showing he had any part in choosing the theatre guests.
[Report #200] WHO. 'Ira Harris (May 31, 1802 – December 2, 1875) was an American jurist and senator from New York.' (
en.wikipedia.org) 'He was a justice of the New York Supreme Court (3rd D.) from 1847 to 1859' (
en.wikipedia.org); 'Prior to that, Harris had been a law professor and served for 13 years as a State Supreme Court judge at Albany.' (
mrlincolnandnewyork.org) 'Judge Harris was, for more than twenty years, a professor of equity, jurisprudence and practice in the Albany Law School' (
en.wikipedia.org)
SENATE. 'In February 1861, Harris was elected a U.S. Senator from New York to succeed William H. Seward who did not seek re-election, but would be appointed U.S. Secretary of State by Abraham Lincoln.' (
en.wikipedia.org) / 'Harris was later appointed U.S. Senator from New York after William H. Seward became Abraham Lincoln’s secretary of state in 1861.' (
en.wikipedia.org) — “elected” vs “appointed” held. 'In February 1861, he was selected as a compromise choice of Republicans to succeed Senator William Henry Seward.' (
mrlincolnandnewyork.org) 'Harris was close to Seward — to whose political machine Harris owed his election to the Senate.' (
mrlincolnandnewyork.org) 'In the Senate, he also served on the Joint Committee on Reconstruction which drafted the Fourteenth Amendment to the United States Constitution.' (
en.wikipedia.org) 'David M. Jordan, biographer of the man who replaced Harris in the Senate in 1867, wrote that Harris “had served a nondescript, middling term through the most exciting period in American history.”' (
mrlincolnandnewyork.org)
WITH THE LINCOLNS. 'New York Senator Ira Harris was among President Lincoln’s “most frequent evening visitors,” wrote Lincoln biographer Benjamin Thomas.' (
mrlincolnandnewyork.org) 'so much so that the President once claimed that he looked underneath his bed each night to check if Senator Harris was there, seeking another patronage favor.' (
mrlincolnandnewyork.org) 'Miss Harris’ father had been one of Lincoln’s staunchest Re-publican supporters in the Senate during the war' (
upload.wikimedia.org). 'Not all of Harris’ interactions with the Lincoln family were happy.' (
mrlincolnandnewyork.org) 'In late 1863, Mary Todd Lincoln’s widowed sister, Emilie Helm, was visiting the White House' (
mrlincolnandnewyork.org); in her account 'Senator Harris turned to her abruptly and with an unsmiling face asked sternly: “Why isn’t Robert in the Army? He is old enough to serve his country.' (
mrlincolnandnewyork.org) Mary Lincoln, March 1865: '“Judge Harris called last evening, to say, farewell. He has been so kind a friend that I am quite as attached to him as if he were a relative.”' (
mrlincolnandnewyork.org)
THE FAMILY. 'His widowed mother married Ira Harris in 1848.' (
en.wikipedia.org) (Henry Rathbone’s mother.) 'Harris was a widower with four children of his own,' (
en.wikipedia.org) 'including a daughter named Clara' (
en.wikipedia.org). 'Step-son of Ira Harris (1802-1875)' (
politicalgraveyard.com); 'married, July 11, 1867 , to Clara Hamilton Harris (daughter of Ira Harris (1802-1875) )' (
politicalgraveyard.com). 'they lived under the same roof—that of Ira Harris, who had taken Seward’s place as senator from New York.' (
archive.org) 'His son William Hamilton Harris (1838-1895) was a brevet lieutenant colonel in the United States Army Ordnance Department.' (
en.wikipedia.org) After 1883 'The three Rathbone children, left without either parent, were taken in by Clara’s brother William Harris, and moved to Ohio.' (
lincolnconspirators.com) 'His grandson, Henry Riggs Rathbone, was a congressman from Illinois.' (
en.wikipedia.org)
14 APRIL 1865. 'Harris’ daughter Clara and her fiancé Major Henry Rathbone, who was Harris’ stepson, were the Lincolns’ guests for the theater on the night of April 14, 1865. The Lincolns were late in picking up the couple at the Harris residence and late arriving at the theater.' (
mrlincolnandnewyork.org) 'saw the President with Mrs. Lincoln in the carriage as it was driven from the Executive Mansion to call for Miss Harris and her fiance' (
archive.org). 'Perhaps Major Rathbone became acquainted with President and Mrs. Lincoln through his stepfather, Sen-ator Harris.' (
upload.wikimedia.org) Any part he had in choosing the guests: not found (Oct 2026). 'Ira Harris died in Albany on December 2, 1875.' (
en.wikipedia.org)
THE OCTOBER 2026 RESEARCH REPORT SAID the Harris–Rathbone tie was 'stepfather_and_patron' (report.txt) and cited 'New York Surrogate Records; Harris Family Papers8' (report.txt); its cited source supports the stepfather tie only; “patron” and those records were not found.