Albert Champion (1878-1927), was a French-born bicycle racing champion with major wins in Paris in 1889 and 1904. After retiring from competitive cycling in 1905, he incorporated the Albert Champion Company in Boston, Massachusetts to make porcelain spark plugs and import French electrical parts and components made by the Nieuport aircraft company. Two years later the Champion name was stamped on the side. He incorporated the Champion Ignition Company, in Lansing, Michigan in October 1908. General Motors founder, William Durant, was impressed with the spark plugs and persuaded him to move to Flint and supply his spark plugs for Buick automobiles.
In 1922 he changed the name to AC Spark Plug Company, utilizing his initials, to settle out of court with his original partners in the Albert Champion Company. In May of 1927, Charles Lindbergh flew his Spirit of St. Louis non-stop across the Atlantic Ocean to Paris, France powered by AC Spark Plugs. Champion died in October of that same year while vacationing in Paris. Today his initials survive as ACDelco (owned by General Motors) and Champion spark plugs sold by the Federal-Mogul Corporation.
Note: In the 1961 advertisement above, a family has just gotten gas for their 1959 Chevrolet when the service station attendant brings out a spark plug. It sounds to him like they need a new one. He will know better once he gets under the hood, but it is best to replace all of them simultaneously. Not happy about the sales pitch, the son throws a 1961 Oldsmobile promotional model at the attendant's head.