 Paul Klee was born in Münchenbuchsee, Switzerland, as the second child of German music teacher Hans Wilhelm Klee (1849–1940) and Swiss singer Ida Marie Klee, née Frick (1855–1921).Under Swiss law citizenship was defined by the father's nationality and Klee thus inherited his father's German citizenship.His sister Mathilde (died 6 December 1953) was born on 28 January 1876 in Walzenhausen.