Princess in the Police Station

1964. Workmen digging on a bombsite in London uncover a hidden vault containing a lead coffin. The coffin is almost reburied in a mass grave in a local churchyard, but an old retired policeman, examining the sarcophagus in the police station where the find has been taken, notices a plaque attached to the leaden lid. What he reads, stuns him--this is not an unknown medieval nun or noblewoman.
The coffin's occupant is a child--a Princess, Anne Mowbray, wife of Richard of Shrewsbury, one of the infamous Princes in the Tower, who disappeared in 1483...

1470's. Elizabeth is the Dowager Duchess of Norfolk. King Edward IV has expressed a wish that the widow's only child, Anne, might marry his younger son, Richard. Unwillingly, she agrees, even though the marriage contract will cause her to lose her dower lands, and if Anne should die young, all the Norfolk lands would go to her young husband instead of blood relatives. But she dares not deny the King, for Elizabeth is the sister of Eleanor Talbot...the King's secret wife from years before. If the King suspects she knows the truth of his relationship with Eleanor, all she loves is in danger, for her knowledge could threaten his throne...
So at just five years old, Anne is married to an even younger Prince Richard in a grand ceremony, but Elizabeth fears for her child's future in Edward's decadent court.
And soon the thing she fears most comes to pass...