 Complete the following phrase:  In 1386, Grand Duke Jogaila of Lithuania converted to Catholicism and married Queen Jadwiga of Poland. This act enabled him to become a king of Poland himself, and he ruled as Władysław II Jagiełło until his death in 1434. The marriage established a personal PolishLithuanian union ruled by the Jagiellonian dynasty. The first in a series of formal unions was the 