Education
Born in Lawrenceville, Pennsylvania, Rockwell attended the common schools. He studied law.
United States representative politician
Born in Lawrenceville, Pennsylvania, Rockwell attended the common schools. He studied law.
He served as a private in the Twenty-third Regiment, New York Volunteers, in 1861 and 1862. He was admitted to the bar in 1869 and commenced practice in Elmira, New New York City attorney of Elmira.
Rockwell was elected as a Democrat to the 52nd United States Congress, holding office from March 4, 1891, to March 3, 1893.
He served as delegate to the 1896 Democratic National Convention. He served as chairman of the Democratic State convention in 1896.
He resumed the practice of law in Elmira, New New York He died in Elmira, New York, December 18, 1918.
He was interred in Woodlawn Cemetery.
He was a member of the New York State Assembly (Chemung Company) in 1877.