Wikipedia:Today's featured article/May 17, 2017

Edward III (1312–1377), King of England from 1327 until his death, restored royal authority after the unorthodox and disastrous reign of his father, Edward II. Edward III transformed the Kingdom of England into one of the most formidable military powers in Europe. His reign of fifty years, the second longest in medieval England, saw vital developments in legislation and government—in particular the evolution of the English parliament—as well as the ravages of the Black Death. Edward was crowned at age fourteen after his father was deposed by his mother, Isabella of France, and her lover Roger Mortimer. At age seventeen he led a successful coup against Mortimer, the de facto ruler of the country, and began his personal reign. After a successful campaign in Scotland he declared himself the rightful heir to the French throne in 1337, but his claim was denied, starting the Hundred Years' War. Following some initial setbacks the war went well for England; victories at Crécy and Poitiers led to the favourable Treaty of Brétigny. Edward's later years were marked by international failure and domestic strife, largely as a result of his inactivity and poor health.