and built his house on one side of the creek, his barn on the other and said "It won't be Bellefontaine, and it won't be Peterstown, but begorra, I'll give ye's both your Waterloo." Emery Peters Rogers' brother, Dr. John Rogers, arrived in 1826 and would come to be known as the region's leading physician. David H. Ditch's log home-turned-hotel was converted into a courthouse in 1825, when Waterloo was declared the county seat. In 1836 the town contained no more than twenty buildings, including a small, two-story brick courthouse, a Methodist church, a log building used as a schoolhouse, a wind-powered mill, and a blacksmith's shop. The town was inhabited by several notable residents throughout the 1800s. George Forquer of Pennsylvania purchased a considerable portion of land in 1818, working closely with Daniel P. Cook to plan out the rapidly developing town. Forquer would later serve as an Illinois State Senator, the 5th Secretary of State of Illinois (1825–1828), the 5th Illinois Attorney General (1829–1832) and, most famously, an early political enemy of Abraham Lincoln. Cook was a prominent lawyer, and later a member of Congress, giving his name to Cook County. Forquer's younger half brother, Thomas Ford, would become the State's governor. 19th century German settlement The town experienced a marked population increase after 1840, and that is when the German population got its impetus, the original German settlers having arrived in the 1830s or even earlier. Some came from populations in the former colonies, but many came directly from Germany, either overland from the East Coast ports, or upriver from New Orleans. These came in search of their own land, and to escape the widespread political unrest in Germany at the time. Many of the city's buildings, its citizens, and especially its local character still reflect the heritage left by those German settlers. Many calques and idioms, such as those found in Pennsylvania Dutch English persist, and there are a number of German words which commonly sprinkle casual conversation. Bellefontaine renamed Waterloo Waterloo received its charter as a town February 12, 1849, and the charter was amended in 1855 and 1859. It was chartered as a city on August 29, 1888. 20th century On December 1, 1978, its historic district was recognized and placed on the National Register of Historic Places. The City of Waterloo also has been recognized for its work through Sister Cities International. On