The substitution of Middle English -o- for Old English -u- before -m-, -n-, or -r- was a scribal habit before minims to avoid misreading the letters in the old style handwriting, which jammed letters. The practice similarly transformed some, monk, tongue, worm.
Bellbrook is a city in Greene County, Ohio, United States. The population was 6,943 at the 2010 census. It is part of the Dayton Metropolitan Statistical Area.
Fairfield is a city in Butler and Hamilton counties in the U.S. state of Ohio, near Cincinnati. Fairfield was incorporated in 1955. The population was 42,510 at the 2010 census. It includes the former hamlet of Symmes Corner, named after Celadon Symmes. The city school district is one of the largest in Ohio, with Fairfield High School graduating 842 students in June 2009.