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astronomy

Robert Todd Lincoln

Robert Todd Lincoln is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Robert Todd Lincoln rather than just read about it. In short: Robert Todd Lincoln (August 1, 1843 – July 26, 1926) was an American lawyer and businessman. He was the eldest son of President Abraham Lincoln and First Lady Mary Todd Lincoln and the only one of their four children to live past age 18.

Robert Todd Lincoln — main illustration
Robert Todd Lincoln — illustration

Key takeaways

  • Robert Todd Lincoln belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Robert Todd Lincoln to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Robert Todd Lincoln from memory before moving on to harder problems.

Reference excerpt

Robert Todd Lincoln (August 1, 1843 – July 26, 1926) was an American lawyer and businessman. He was the eldest son of President Abraham Lincoln and First Lady Mary Todd Lincoln and the only one of their four children to live past age 18. Robert Lincoln became a business lawyer and company president, serving as both United States Secretary of War (1881–1885) and the U.S. Ambassador to Great Britain (1889–1893). Lincoln was born in Springfield, Illinois, and graduated from Harvard College. He then served on the staff of General Ulysses S. Grant as a captain in the Union army in the closing days of the American Civil War. After the war was over, he married Mary Eunice Harlan, and they had three children together. Following completion of his law school studies in Chicago, he built a successful law practice, and became wealthy representing corporate clients. Lincoln was often spoken of as a possible candidate for national office, including the presidency, but never took steps to mount a campaign. He served as Secretary of War in the administration of James A. Garfield, continuing under Chester A. Arthur, and as Minister to Great Britain in the Benjamin Harrison administration. Lincoln became general counsel of the Pullman Company, and after founder George Pullman died in 1897, Lincoln assumed the company's presidency. After retiring from this position in 1911, Lincoln served as chairman of the board until 1924. In Lincoln's later years, he resided at homes in Washington, D.C., and Manchester, Vermont; the Manchester home, Hildene, was added to the National Register of Historic Places in 1977. In 1922, he took part in the dedication ceremonies for the Lincoln Memorial. Lincoln died at Hildene on July 26, 1926, at age 82, and was buried at Arlington National Cemetery.

Early life Robert Todd Lincoln was born in Springfield, Illinois, on August 1, 1843, to Abraham Lincoln and Mary Todd Lincoln. He had three younger brothers, Edward, William, and Tad. By the time Lincoln was born, his father had become a well-known member of the Whig political party and had served as a member of the Illinois state legislature for four terms. He was named after his maternal grandfather, Robert Smith Todd. Some commentators believe that Robert Lincoln had a distant relationship with his father, in part because, during Robert's formative years, Abraham Lincoln spent months away on the judicial circuit. Robert recalled, "During my childhood and early youth he was almost constantly away from home, attending court or making political speeches." Abraham apparently realized that his being away had a potential impact on his sons as evidenced by the following quote from his April 16, 1848, letter to his wife: "don't let the blessed fellows forget Father". One such example that gives insight into Robert's childhood in general was related by Joseph Humphreys, who had taken a train to Lexington, Kentucky, in 1847: "there were two lively youngsters on board who kept the whole train in a turmoil, and their long-legged father, instead of spanking the brats, looked pleased as Punch and aided and abetted the older one in mischief". Lincoln took the Harvard College entrance examination in 1859, but failed fifteen out of the sixteen subjects. Subsequently, Lincoln was enrolled at Phillips Exeter Academy to prepare for college; he graduated Phillips Exeter in 1860. Admitted to Harvard, he graduated in 1864, having been elected vice-president of the Hasty Pudding Club, and was a member of the Delta Kappa Epsilon (Alpha chapter) fraternity. Historian Jan Morris opines that Robert Lincoln, "having failed fifteen out of sixteen subjects in the Harvard entrance examination, got in at last and emerged an unsympathetic bore."

Civil War years

After graduating from Harvard, Robert Lincoln enrolled at Harvard Law School, which he attended from September 1864 to January 1865, when he left in order to join the Union Army. Mary Todd Lincoln had prevented Robert from joining the Army until shortly before the war's conclusion. President Lincoln argued to her that "our son is not more dear to us than the sons of other people are to their mothers." In January 1865, the First Lady gave in and President Lincoln wrote Ulysses S. Grant, asking if Robert could be placed on his staff. On February 11, 1865, Lincoln was commissioned as an assistant adjutant with the rank of captain. He served in the last weeks of the Civil War on Grant's staff, a status which meant, in all likelihood, he would not be involved in actual combat. According to Grant's personal secretary, Horace Porter, Lincoln was "exceedingly popular" with the rest of the staff, "was always ready to perform his share of hard work" and "never expected to be treated differently from any other officer" because he was the President's son. Lincoln was present at Appomattox when Robert E. Lee surrendered. He resigned his commission on June 12, 1865, and returned to civilian life.

Incident with Edwin Booth Lincoln was once saved from possible serious injury or death by Edwin Booth, whose brother, John Wilkes Booth, assassinated Robert's father. This event took place on a train platform in Jersey City, New Jersey. The exact date is uncertain, but it is believed to have taken place in late 1863 or early 1864. In a letter written in 1909 to the editor of The Century Magazine, Robert Lincoln recalled what had happened that day:

… excerpt ends here. Continue reading the full article.

Illustrations

Robert Todd Lincoln illustration
Robert Todd Lincoln: Portrait by Mathew Brady c. 1865
Portrait by Mathew Brady c. 1865
Robert Todd Lincoln: Portrait, 1870–1880
Portrait, 1870–1880
Robert Todd Lincoln: Presidential Possibilities card issued by Duke Sons & Co. to promote Honest Long Cut Tobacco, 1888
Presidential Possibilities card issued by Duke Sons & Co. to promote Honest Long Cut Tobacco, 1888
Robert Todd Lincoln: Chief Justice William Howard Taft (left), President Warren G. Harding (center) and Lincoln at the dedication of the Lincoln Memorial, May 30, 1922
Chief Justice William Howard Taft (left), President Warren G. Harding (center) and Lincoln at the dedication of the Lincoln Memorial, May 30, 1922

Worked examples

Example 1 — a first encounter with Robert Todd Lincoln

Start with the simplest possible case. Write down what Robert Todd Lincoln claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Robert Todd Lincoln before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Robert Todd Lincoln ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Robert Todd Lincoln

In research
Robert Todd Lincoln appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Robert Todd Lincoln in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Robert Todd Lincoln is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1843 births, 1926 deaths, 19th-century American diplomats, so understanding it makes those chapters shorter.
In everyday life
Look for Robert Todd Lincoln outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Robert Todd Lincoln in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Robert Todd Lincoln means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Robert Todd Lincoln out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Robert Todd Lincoln in simple terms?

Robert Todd Lincoln (August 1, 1843 – July 26, 1926) was an American lawyer and businessman. He was the eldest son of President Abraham Lincoln and First Lady Mary Todd Lincoln and the only one of their four children to live past age 18.

Why does Robert Todd Lincoln matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Robert Todd Lincoln?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Robert Todd Lincoln.

Tags

  • 1843 births
  • 1926 deaths
  • 19th-century American diplomats
  • 19th-century American politicians
  • Amateur astronomers
  • Ambassadors of the United States to the United Kingdom
  • American people of English descent
  • Arthur administration cabinet members
  • Burials at Arlington National Cemetery
  • Children of presidents of the United States
  • Garfield administration cabinet members
  • Harvard College alumni

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