stylistic:tone, information:classification, quality:correction
War in Brittany

Meanwhile, Philippe Emmanuel, Duke of Mercœur, whom Henry III had made governor of Brittany in 1582, was endeavouring to make himself independent in that province. A leader of the Catholic League, he invoked the hereditary rights of his wife, Marie de Luxembourg, who was a descendant of the dukes of Brittany and heiress of the Blois-Brosse claim to the duchy as well as Duchess of Penthièvre in Brittany, and organized a government at Nantes. Proclaiming his son "prince and duke of Brittany", he allied with Philip II of Spain, who sought to place his own daughter, infanta Isabella Clara Eugenia, on the throne of Brittany. With the aid of the Spanish under Juan del Águila, Mercœur defeated Henry IV's forces under the Duke of Montpensier at the Battle of Craon in 1592, but the royal troops, reinforced by English contingents, soon recovered the advantage; in September 1594, Martin Frobisher and John Norris with eight warships and 4,000 men besieged Fort Crozon, also known as the "Fort of the Lion (El León)" near Brest and captured it on November 7, killing 400 Spaniards including women and children as only 13 survived.