There is a long Soviet trradition to name things after Communtist leaders. There was Leningrad after Lenin, and Ulianovsk after Lenin (hih real surname), and Stalingrad, Stalino, Stalinabad, etc etc etc named after you-know-who, and ZIS auto works ("factory named after Stalin" would be the literal translation), and ZIM after Molotov, and... and... and... and when the East German government were uniting assorted Suhl gunmakers under the same parent company, they followed the example and named it after Thaellman, who was sort of like DDR's Lenin.