Ithamar Conkey Sloan was an American educator, lawyer, and politician. A Republican, he served two terms in the United States House of Representatives, representing the State of Wisconsin. He was the brother of Andrew Scott Sloan. In historical documents his name is often abbreviated to I. C. Sloan.

Andrew Scott Sloan was an American lawyer, Republican politician, and Wisconsin pioneer. He served one term in the U.S. House of Representatives and was Wisconsin's 11th Attorney General. He also 14 years as a Wisconsin circuit court judge and was a three-term mayor of Beaver Dam, Wisconsin. His brother, Ithamar Sloan, was also a U.S. congressman.