Rubuta ci gaba don wannan sakin layi - Verviers ya kama sojojin Sojoji na shida a ranar 5 ga Fabrairu 1814, a matsayin wani ɓangare na kamfen a arewa maso gabashin Faransa. Kungiyar ta nada David a matsayin memba na "kwamitin d'arrondissement" (majalisa) na yankin. Taron Vienna na bayan yakin, wanda ya ƙare a 1815, ya ƙayyade cewa Belgium za a haɗa shi cikin sabuwar Masarautar Netherlands. Verviers a lokacin ne Majalisar Regency ta mallake ta kuma David ya sami wurin zama a wannan hukumar. A shekara ta 1817 David ya rufe tsohuwar makabartar coci a cikin birni kuma ya kafa sabon makabartar a gefen gari. A shekara ta 1830 Belgium ta fara juyin juya hali
a kan mulkin Holland. David, mai goyon bayan dalilin Belgium, ya kasance memba na Hukumar Tsaro ta Jama'a. Ya kuma kasance memba na Majalisa ta kasa; yana daya daga cikin mambobi tara da suka kada kuri'a don kafa jamhuriyar Belgium kuma daga baya suka kada kuri'a don Belgium ta kasance tare da Faransa. An nada David na farko "burgomaster" (magajin gari) na Verviers a ƙarƙashin Masarautar Belgium a 1830.