Lady Gray, of the Yorkist party, is a very attractive widow who has lost her lands when her husband was killed fighting on the Yorkist side.
She petitions King Edward to get them back, not expecting that he will offer a trade instead: her body for her lands. She utterly refuses, being willing to lose her lands to avoid prostituting herself, but is shocked to hear him offer marriage instead. She is keenly aware that she is far too low-born to be Queen of England, but is in the end convinced. Her family immediately begins to gain wealth and power, to the disgust of the higher nobility. She attempts to build bridges to the royal brothers, but is not successful. Her marriage does not makes for a particularly happy life, as she is beset with the dislike of the nobility and the fears of civil war, which send her running to sanctuary when Warwick returns and captures Edward. She bears Edward a son by the play’s end. How this turns out can be discovered in Richard III.