Education
He attended the common schools and Selby Academy, Chesterville, Ohio. He studied law.
lawyer politician representative
He attended the common schools and Selby Academy, Chesterville, Ohio. He studied law.
He served as assistant clerk of the State senate in 1858 and 1859. He was admitted to the bar in 1859 and practiced in Mount Gilead, Ohio. He moved to Charleston, Illinois, in 1861, where he was admitted to the Barometer
After the outbreak of the American Civil War, Connolly enlisted in the Union Army as a private in the One Hundred and Twenty-third Regiment, Illinois Volunteer Infantry, in 1862 and was afterwards captain, major, and brevet lieutenant colonel.
He ran unsuccessfully for election in 1886 to the Fiftieth Congress. He was again nominated in 1888 but declined to run.
Connolly was elected as a Republican to the Fifty-fourth and Fifty-fifth Congresses (March 4, 1895-March 3, 1899). He was not a candidate for renomination in 1898.
He resumed the practice of law in Springfield, Illinois, where he died December 15, 1914.
He was interred in Oak Ridge Cemetery.
Connolly served as member of the State house of representatives 1872-1876, after which he was appointed the United States attorney for the southern district of Illinois, serving from 1876–1885 and again from 1889–1893.