Jacob Brinkerhoff Jacob Brinkerhoff, (August 31, 1810 - July 19, 1880), jurist, Congressman, author of the Wilmot Proviso, was born in Niles, Cayuga County, New York, the son of Henry I. Brinkerhoff and Rachel Berier. He was schooled at the academy at Prattsburgh, Steuben County, New York, and studied law in the office of Howell and Bro. Two years later he removed to Mansfield, Richland County, Ohio, where in 1837 he was admitted to the bar and began to practice in partnership with Thomas W. Bartley. In October of that year he married Carolina Campbell, who died in 1839. He married as his second wife Marian Titus, of Detroit, Michigan, by whom he had two sons and two daughters.
He was prosecuting attorney for Richland County, Ohio, from 1839 to 1843, and was then elected as a Democrat to the Twenty-eighth and Twenty-ninth Congresses (March 4, 1843 - March 3, 1847), where he was chairman of the Committee on Invalid Pensions (Twenty-eighth Congress). He became affiliated with the Free Soil party and drew up the famous resolution known as the Wilmot Proviso, the original draft in his handwriting is in the Congressional Library.
Several copies of this resolution were made and distributed among the Free Soil members of Congress, with the understanding that whomever among them should catch the speaker's eye and get the floor should introduce it. David Wilmot chanced to be that man, and hence the proviso bears his name instead of Brinkerhoff's
At the close of his Congressional career he resumed his law practice at Mansfield. In 1856 he was elected to Ohio Supreme Court, where he served as Chief Justice from 1859 until 1871, being succeeded by Josiah Scott. He became affiliated with the Republican Party on its formation in 1856, and was an alternate delegate to Republican National Convention from Ohio in 1868. He died in Mansfield, and was buried in Mansfield Cemetery.