Unity makes strength
The French were in the Netherlands from 1795 to 1813, first as the Batavian Republic then the Kingdom of Holland. Early on the national motto was changed to "Gelykheid, Vryheid, Broederschap" (Equality, Liberty, Fraternity). From 1802 to 1810 'Unity makes strength' was used again. In 1816, it switched to the House of Orange motto 'Je maintiendrai'.