Philip IV , called the Fair or the Iron King , was King of France from 1285 until his death. By virtue of his marriage with Joan I of Navarre, he was also, as Philip I, King of Navarre from 1284 to 1305. He also briefly ruled the County of Champagne in right of his wife, although after his accession as king in 1285 the county remained under the sole governance of his wife until 1305, and then his son, Louis until 1314.
A member of the House of Capet, Philip was born at the Palace of Fontainebleau at SeineetMarne to King Louis IXs eldest son Philip the Bold and Isabella of Aragon. Two years later, his elder brother Louis became heir apparent when his grandfather died and his father ascended to the throne as King Philip III. When Louis died in May 1276, Philip became heir apparent. Philips younger brother Robert also died in May 1276, leaving Philip and his younger brother Charles. Their stepmother, Marie of Brabant, was suspected of poisoning the two young boys her first son, Louis, was born in the same month the two boys died. The prince was nicknamed the Fair because of his handsome appearance, but his inflexible personality gained him other epithets, from friend and foe alike. His fierce opponent Bernard Saisset, bishop of Pamiers, said of him, He is neither man nor beast. He is a statue.
Source: Wikipedia