On July 31, 1910,

Dr. Hawley Harvey Crippen, whose wife, Cora, had disappeared from their London home, was arrested along with his mistress, Ethel Le Neve (posing as Crippen's son), aboard the steamship SS Montrose upon its arrival in Quebec, Canada. (Crippen was later convicted by a British court of murdering his wife and executed; Le Neve was acquitted of any involvement.)

In 1777,

the Marquis de Lafayette, a 19-year-old French nobleman, was made a major-general in the American Continental Army.

In 1875,

the 17th president of the United States, Andrew Johnson, died in Carter County, Tenn., at age 66.