Within days of posting about Albion history and the mysterious Fred Markey who carved his name in my garage, my LiveJournal friend angstchic found a possible match, a person of the same name who would have been around 12 years old at the time:
It gives his home as Allen County, but that borders Noble County and it's not the most common name in the area at the time -- so it's very possible. And what 12 year old of the era didn't carry around a carving knife?
As if that wasn't enough, Angstchick also found an online version of a rare history of early Albion, which was published in 1908 by the New Era Publishing House of Albion:
It recounts the 1859 courthouse fire, which opens my history of the Albion Fire Department. Thanks so much for going the extra mile and finding this information!