Question: Brian Raabe was born in a city that is the county seat of what county?

Context articles: Johnston Library
Brian Raabe
Cerro Gordo County Courthouse (Iowa)
Ellicott City, Maryland
New Ulm, Minnesota
Blanco County, Texas
Coronado, Kansas
1724 Chester Courthouse
Mason, Michigan
Van Buren, Missouri

The Johnston Library is a historic library located at 210 W. 10th St. in Baxter Springs, Kansas.
 The building was constructed in 1872 to serve as a courthouse during Baxter Springs' unsuccessful attempt to become the Cherokee County seat.
 Though Baxter Springs had lost an election to choose the county seat in 1869 to Columbus, supporters of both cities had attempted to fraudulently swing the election in their favor, and Baxter Springs hoped it could still become county seat in the future.
 The building initially served as the county jail and sheriff's office until Columbus completed its jail in 1880.
 After this, Baxter Springs ultimately gave up its attempts to become the county seat, and the building became its city hall.
 In 1905, resident Niles P. Johnston bequeathed $5,000 to the city to start a library, and the city hall building was chosen to house it.
Brian Charles Raabe (born November 5, 1967) in New Ulm, Minnesota, is a retired Major League Baseball infielder.
 Raabe played for three different major league ballclubs during his career: the Minnesota Twins (–), Seattle Mariners (), and Colorado Rockies (1997), playing third base and second base.
The Cerro Gordo County Courthouse is located in Mason City, Iowa, United States.
 When Cerro Gordo County was created in 1855 and Mason City was selected to be the county seat.
 Dissatisfaction in the western part of the county led the Iowa legislature to appoint three new commissioners who would move the county seat to Livonia.
 A courthouse was built there.
 A petition signed by over half of the citizens of the county requested that the county seat be moved back to Mason City.
 Mason City also won the election in 1858 to decide the matter 155-48.
 Two courthouses have stood in Mason City prior to the present Modernist structure that was occupied by the county in 1960.
 It had been built as the Standard Oil Building, and was acquired by the county in 1959 for $159,400 and then remodeled for their use.
Ellicott City is an unincorporated community and census-designated place, along with being the county seat of local government in Howard County, Maryland, United States.
 It is part of the Baltimore Metropolitan Area.
 The population was 65,834 at the 2010 census.
 Founded in 1772, the town contains the B. & O. Railroad Museum's branch at the Ellicott City Station, built in 1830 as the first terminus of the initial line.
 The downtown historic district is located in the valley of the small Tiber River, with its east end abutting the Patapsco River, which forms the Baltimore County line.
 As of the 2000 census, Ellicott City surpassed Towson (county seat of neighboring Baltimore County) for the first time, as the largest unincorporated county seat in the country.
New Ulm is a city in Brown County, Minnesota, United States.
 The population was 13,522 at the 2010 census.
 It is the county seat of Brown County.
Blanco County ( ) is a county located on the Edwards Plateau in the U.S. state of Texas.
 As of the 2010 census, the population was 10,497.
 Its county seat is Johnson City.
 The county is named for the Blanco River which traverses the county.
 The State of Texas formed Blanco County in 1858 from portions of Burnet, Comal, Gillespie and Hays counties.
 The city of Blanco served as the county seat from 1858 to 1890, when it was moved to Johnson City.
Coronado is an unincorporated community in Wichita County, Kansas, United States, was once a thriving community.
 Platted in 1885, Coronado was involved in the bloodiest county seat fight in the history of the American West.
 The shoot-out on February 27, 1887, with boosters—some would say hired gunmen—from nearby Leoti left several people dead and wounded.
 Afterwards numerous famous lawmen from Dodge City, which included Wyatt Earp and Bat Masterson, gathered to calm the storm that ensued after the bloody fight.
 A small town called Farmer City, which was located between Coronado and Leoti, was hoped by some to become the county seat—which would end the fighting.
 Leoti later won the right to become the county seat and now the other two towns consist mainly of farmland.
The old Chester Courthouse was built in 1724 in Chester, to serve as the courthouse for Chester County, Pennsylvania.
 Chester County was one of the first three counties in the Province of Pennsylvania set up by William Penn.
 About 1790 the county seat was moved to West Chester, Pennsylvania and the Chester Courthouse no longer served as the county courthouse.
 A few years later, the area around Chester was separated from Chester County and formed into Delaware County, Pennsylvania and the Chester Courthouse became the courthouse for Delaware County.
 In 1850 the county seat was again moved - this time to Media and Chester Courthouse served as City Hall for the city of Chester.
Mason is a city in the U.S. state of Michigan.
 It is named after the state's first governor, Stevens T. Mason.
 As of the 2010 census, the city population was 8,252.
 It is the county seat of Ingham County.
 Mason is the only city in the U.S. that serves as a county seat ahead of a state capital, with the capital of Lansing also in Ingham County.
 Despite Mason being the county seat, many county offices and courtrooms are located in Lansing.
Van Buren is a city that is the county seat of Carter County, Missouri, in the United States.
 It is the largest town in Carter County.
 Van Buren was founded in 1833 as the county seat of Ripley County and was named after then Vice President of the United States, Martin Van Buren.
 In 1859 Van Buren became a part of the newly created Carter County and was subsequently selected to be the county seat.
 The 2010 U.S. Census shows Van Buren with a population of 819, a decrease of 3.1 percent from its 2000 population of 845.