By 1830, massive German immigration to the city had occurred. The most influential German newspaper in 1843 was "Der Westbote". Many would serve in the American Civil War, thus gaining the universal respect of the local citizens. By 1865, one-third of Columbus's population was German and the community was flourishing. They built up the local neighborhood, including many businesses, such as Hessenauer Jewelers and Lazarus Department Stores, schools, and churches, such as the Ohio-historic St. Mary's Catholic Church, built in 1865 and adorned with a steeple in 1893. German-American George J. Karb became mayor of the city, twice, at the end of the 19th century and again in the early 20th century.