Much of Catholic France, organized into the Catholic League, refused to recognize a Protestant monarch and instead recognized Henry IV's uncle, Charles, Cardinal de Bourbon, as rightful king, and the civil war continued. Henry won a crucial victory at Ivry on 14 March 1590 and, following the death of the Cardinal the same year, the forces of the League lacked an obvious Catholic candidate for the throne and divided into various factions. Nevertheless, as a Protestant, Henry IV was unable to take Paris, a Catholic stronghold, or to decisively defeat his enemies, now supported by the Spanish. He reconverted to Catholicism in 1593—he is said to have remarked, "Paris is well worth a mass"—and was crowned king retroactively to 1589 at the Cathedral of Chartres on 27 February 1594.