| John B. Penington | |
| State: | Delaware |
| District: | at-large |
| Term Start: | March 4, 1887 |
| Term End: | March 3, 1891 |
| Predecessor: | Charles B. Lore |
| Successor: | John W. Causey |
| Term Start2: | 1874 |
| Term End2: | 1879 |
| Predecessor2: | Charles B. Lore |
| Successor2: | George Gray |
| Birth Date: | 20 December 1825 |
| Birth Place: | New Castle, Delaware, U.S. |
| Death Place: | Dover, Delaware, U.S. |
| Party: | Democratic |
| Alma Mater: | Jefferson College |
| Profession: | Lawyer |
John Brown Penington (December 20, 1825 – June 1, 1902) was an American lawyer and politician, from Dover, in Kent County, Delaware. He was a member of the Democratic Party who served as Attorney General of Delaware and two terms as U. S. Representative from Delaware.
Penington was born near New Castle, Delaware, and pursued academic courses in New Castle and nearby Newark. He graduated from Jefferson College at Canonsburg, Pennsylvania. He engaged in teaching in Indiana for several years, but then returned to Delaware. There he studied law, was admitted to the Delaware Bar in 1857, and commenced the practice in Dover, Delaware.
He was first a member of the Delaware House of Representatives in 1857 and then was clerk of the same Delaware House of Representatives in 1859, 1863, and 1871. He was a delegate to the renowned Democratic National Conventions at Charleston and Baltimore in the 1860 election. In 1868, he was appointed United States Attorney for the district of Delaware by President Andrew Johnson and served until 1872. He was appointed Delaware Attorney General by Governor Ponder in 1874 and served until 1879. Penington was elected as a Democrat to the 50th and 51st Congress, serving from March 4, 1887, to March 3, 1891. He was not a candidate for renomination in 1890 and resumed the practice of law at Dover.
Penington died at Dover and is buried there in the Old Presbyterian Cemetery, on the grounds of the Delaware State Museum.
Penington's last years were darkened by the murders of his daughters Elizabeth and Ida, by poisoned candy. It was sent to their home from San Francisco, California, by Cordelia Botkin (an ex-lover of Elizabeth's husband, John Preston Dunning). The poison was traced back to her, and Penington lived long enough to know the crime would be brought home against the perpetrator.
Elections are held the first Tuesday after November 1. U.S. Representatives took office March 4 and have a two-year term.
| Public offices | ||||||
|---|---|---|---|---|---|---|
| Office | Type | Location | Began office | Ended office | Notes | |
| Attorney General | Executive | Dover | 1874 | 1879 | Delaware | |
| U.S. Representative | Legislature | Washington | March 4, 1887 | March 3, 1889 | ||
| U.S. Representative | Legislature | Washington | March 4, 1889 | March 3, 1891 |
| United States congressional service | |||||||
|---|---|---|---|---|---|---|---|
| Dates | Congress | Chamber | Majority | President | Committees | Class/District | |
| 1887–1889 | 50th | U.S. House | Democratic | Grover Cleveland | at-large | ||
| 1889–1891 | 51st | U.S. House | Republican | Benjamin Harrison | at-large |
| Election results | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | Office | Subject | Party | Votes | % | Opponent | Party | Votes | % | |||||||||||
| 1886 | U.S. Representative | John B. Penington | Democratic | 13,837 | 62% | Richard W. Cooper | Republican | 8,392 | 38% | |||||||||||
| 1888 | U.S. Representative | John B. Penington | Democratic | 16,396 | 55% | Charles H. Treat | Republican | 12,935 | 44% |