Simplify the following text for a Grade 7 native English-speaking person.
Original: Margaret of Valois ( French : Marguerite de France , Marguerite de Valois , 14 May 1553 -- 27 March 1615 ) was Queen of France and of Navarre during the late sixteenth century . Royal Princess of France by birth , she ultimately became the only surviving member of the Royal Valois dynasty .
Simplified: Margaret of Valois ( May 14 , 1553 â `` May 27 , 1615 ) was a Princess of France and a member of the house of Valois .