John Coleman Olin

Just located the death certificate for John Coleman Olin (John-Joseph-Joseph-Joseph-Caleb-John Coleman Olin) in Clare County, Surrey Township, Michigan. The online copy is blury and I've order a copy. He passed 8 Sept. 1899 at the age of 80 years, 7 months and 23 days, less than a year after he remarried. Anyone have an idea where the middle name Coleman came from?