During the German occupation of Poland (World War II), Sompolno was renamed to Deutscheck between 1939–1943 and then later to Deutscheneck between 1943–1945[3] in attempt to erase traces of Polish origin.
Sports
The local football club is GKS Sompolno. It competes in the lower leagues.
^Słownik geograficzny Królestwa Polskiego i innych krajów słowiańskich, Tom XV Część II (in Polish). Warszawa. 1902. p. 611.{{cite book}}: CS1 maint: location missing publisher (link)