This documentary argued that all British monarchs since Henry VII of England did not have a valid claim to the English throne. The programme based its thesis on the centuries old claim that Edward IV was illegitimate born to Cecily Neville by an English archer while her husband, Richard, Duke of York was elsewhere in France fighting. The legitimacy of Edward IV was the subject of speculation at the time, and a document in Rouen Cathedral is presented by Dr. Michael Jones as indicating that Richard, Duke of York, and Cecily Neville were a hundred miles apart during the five week period when Edward’s conception must have occurred. This theorised illegitimacy of Edward would bar a rightful claim for himself and his descendants. This would have the effect of making the heirs of Richard and Cecily’s son, George, Duke of Clarence, the real monarchs.