Mehlem is located about 40 kilometers south of Köln (Cologne). Today, it is a southern district of metropolitan Bonn. Names Mehlem, Stadt Bonn, Nordrhein-Westfalen Surnames Engelbert* Church of St. Severin in Mehlem (2005). Source: Benno Graffmann via Wikipedia Commons. 50.660833, 7.191944 Volga Colonies Preuss