At 23, John W. Champlin (1831-1901) came to Grand Rapids, Michigan, where his brother, Stephen G. Champlin practiced law. John Champlin studied law in his brother's office, passing his examination before Judge Martin in 1855. In 1856, John Champlin was chosen to prepare a revision of the Grand Rapids City Charter. At different times, Champlin served as City Recorder, City Attorney and Mayor. He was elected to the State Supreme Court in 1883. The University of Michigan conferred upon him the honorary degree of Doctor of Laws in 1887. He ended his career as a lecturer at the University of Michigan.

Stephen G. Champlin (1827-1864) was a prominent lawyer in Grand Rapids. Born in Kingston, New York, Champlin came to Grand Rapids in 1853 and entered into a partnership with Lucius Patterson. In 1856, Champlin was elected Judge of the Recorders Court of Grand Rapids. At the outbreak of the Civil War, Champlin enlisted in the Third Michigan Volunteer Infantry. On May 13, 1861, he received a commission as a Major in that regiment; on October 28, 1861, was promoted to the rank of Colonel and put in command of the Third Michigan Infantry. At the Battle of Fair Oaks, Virginia, Champlin was severely wounded. Champlin was promoted to Brigadier General on November 29, 1862, but never returned to active field command. Champlin died on January 24, 1864, in his home on Front St. in Grand Rapids.