Jacques Cartier (UKˈkɑːrtieɪ , USalsoˌkɑːrtiˈeɪ,_kɑːrˈtjeɪ , ʒak kaʁtje, - kaʁt͡sje; Jakez Karter; 31 December 1491 1 September 1557) was a French-Breton maritime explorer for France. Jacques Cartier was the first European to describe and map the Gulf of Saint Lawrence and the shores of the Saint Lawrence River, which he named "The Country of Canadas" after the Iroquoian names for the two big settlements he saw at Stadacona (Quebec City) and at Hochelaga (Montreal Island). Jacques Cartier was born in 1491 in Saint-Malo, the port on the north-east coast of Brittany. Cartier, who was a respectable mariner, improved his social status in 1520 by marrying Mary Catherine des Granches, member of a leading aristocratic family. His good name in Saint-Malo is recognized by its frequent appearance in baptismal registers as godfather or witness. In 1534, two years after the Duchy of Brittany was formally united with France in the Edict of Union, Cartier was introduced to King Francis I by Jean Le Veneur, bishop of Saint-Malo and abbot of Mont Saint-Michel, at the Manoir de Brion. The King had previously invited (although not formally commissioned) the Florentine explorer Giovanni da Verrazzano to explore the eastern coast of North America on behalf of France in 1524. Le Veneur cited voyages to Newfoundland and Brazil as proof of Cartier's ability to "lead ships to the discovery of new lands in the New World". On April 20, 1534, Cartier set sail under a commission from the king, hoping to discover a western passage to the wealthy markets of Asia. In the words of the commission, he was to "discover certain islands and lands where it is said that a great quantity of gold and other precious things are to be found". It took him twenty days to sail across the ocean. Starting on May 10 of that year, he explored parts of Newfoundland, the Strait of Belle Isle and southern shore of the Labrador Peninsula, the Gaspé and North Shore coastlines on the Gulf of St. Lawrence, and some parts of the coasts of the Gulf's main islands, including Prince Edward Island, Anticosti Island and the Magdalen Islands.