Today’s Royal Family is descended from William I, a man alternately known as William the Conqueror or William the Bastard. Born illegitimate, he succeeded his father as Duke of Normandy and made a fortuitous marriage to Matilda of Flanders. Of their sons, two would become kings of England – William II (William Rufus) and Henry I. Understandably, much less is known about their daughters. Indeed, we don’t know for sure their birth order, lifespans, or even how many of them there were.