performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
Marengo is a village in Morrow County, Ohio, United States. The population was 342 at the 2010 census. Marengo is south of Mount Gilead, the county seat.
Williams County, Ohio. Williams County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 37,642. Its county seat is Bryan. The county was created in 1820 and later organized in 1824. It is named for David Williams, one of the captors of John AndrÃ© in the American Revolutionary War.