Born in Shawneetown, Illinois, Wilshire was educated in the country schools. He spent three years in California engaged in gold mining, from 1852 to 1855, when he returned to his home in Port Byron and engaged in the coal mining and mercantile business. He studied law and was admitted to the bar in 1859.
After the war, he relocated to the capital city of Little Rock, Arkansas, and commenced the practice of law. He was appointed solicitor general of the state in 1867. From 1868 to 1871, he was chief justice of the Arkansas Supreme Court, leaving the position to resume his law practice.[2]
The 1872 general election of Wilshire as a RepublicanRepresentative to the Forty-third U. S. Congress for the Third Congressional District was disputed by Democrat Thomas Gunter and, after a lengthy review by the Committee on Elections, Gunter was declared the winner and rightful occupant of the seat, ultimately taking the oath on June 16, 1874.[3]
Wilshire was elected as a Democrat to the Forty-fourth Congress (March 4, 1875 – March 3, 1877). He was not a candidate for renomination in 1876. He engaged in the practice of law in Washington, D.C., where he died August 19, 1888.[2]
^Gunter vs. Wilshire. Washington, D.C.: The House of Representatives During the First Session of the 43rd Congress. 1874. Papers in the Case of Thomas M. Gunter vs. W. W. Wilshire, Third Congressional District of Arkansas