In the 1667 to 1668 War of Devolution (French: Guerre de Dévolution, Dutch: Devolutieoorlog), France occupied large parts of the Spanish Netherlands and Franche-Comté, both then provinces of the Holy Roman Empire (and properties of the King of Spain). The name derives from an obscure law known as the Jus Devolutionis, used by Louis XIV of France to claim that these territories had "devolved" to him by right of marriage to Maria Theresa of Spain.