Alice (Royal Mistress) Perrers, Birth:circa 1330, mistress, Death:1376 (46)
From Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Alice_Perrers.
Alice Perrers, Born: 1348, Died:1400/1401
Alice Perrers, Royal Mistress
Edward III, king of England
Alice Perrers (1348–1400) was an English royal mistress whose lover and patron was King Edward III of England. She met him originally in her capacity as a lady-in-waiting to Edward's consort, Philippa of Hainault. As a result of her liaison, she acquired significant land holdings.
http://en.wikipedia.org/wiki/Philippa_of_Hainault
Philippa of Hainault, Queen consort of England
By all accounts, her forty-year marriage to Edward had been happy, despite his adulterous affair with her lady-in-waiting, Alice Perrers, during the latter part of it.