Edward III - reign 1327-1377
Roger Mortimer was de facto regent of England from 1327-1330
Edward III was crowned at the age of 14 after deposition of his father Edward II. At that time Roger Mortimer was the acting ruler of England with his mother Isabella of France.
Edward III is known for his military prowess and restoring the dominance of England after the unorthodox reign reign of his father Edward II. He continued the Edwardian campaign in Scotland and then declared himself the rightfull heir to the throne of France. This precipitated the start of the Hundred Years War.
David Michael describes Edward III as "liking parliaments". As the Wikipedia page says he "saw vital developments in legislation and government, in particular the evolution of the English Parliament".
Wikipedia
Edward III outlived his eldest son, Edward the Black Prince and he was succeeded by his grandson Richard II.
Philippa of Hainault
Philippa of Hainault (sometimes spelled Hainaut; Middle French: Philippe de Hainaut; 24 June 1310 (or 1315)[1][2][3] – 15 August 1369) was Queen of England as the wife and political adviser of King Edward III.[4] She acted as regent in 1346,[5] when her husband was away for the Hundred Years' War. Daughter of William I, Count of Hainaut, and French princess Joan of Valois, Philippa was engaged to Edward, Prince of Wales, in 1326.[6] Their marriage was celebrated in York Minster on 24 January 1328, some months after Edward's accession to the throne of England and Isabella of France's infamous invasion.[7] After her husband reclaimed the throne, Philippa influenced King Edward to take interest in the nation's commercial expansion, was part of the successful Battle of Neville's Cross, and often went on expeditions to Scotland and France. She won much popularity with the English people for her compassion in 1347, when she successfully persuaded the King to spare the lives of the Burghers of Calais. This popularity helped maintain peace in England throughout their long reign.[8]