There is a school of thought that believes that Perkin Warbeck was actually one of the princes. He was supported by Margaret of Burgundy, Richard's sister and therefore his aunt. Once caught in England, he was imprisoned and then a somewhat suspect "escape plan" was hatched with Edward, the Earl of Warwick, George's son (and so also Richard's nephew.) Both were caught and executed.
Which sort of brings up the issue of Edward. Being the son of Richard's older brother, his claim to the throne was just as solid as the princes'. They had been declared bastards after it came to light that their father was actually married to someone else when he married their mother, while Edward was tainted by his father's treason. Many think that George, his father, knew of the first marriage, thus his own imprisonment and execution. But while Richard sent Edward to live in Richard's wife's household, when he came to the throne, Henry VII thought him enough of a threat to throw him in the tower.
no subject
Which sort of brings up the issue of Edward. Being the son of Richard's older brother, his claim to the throne was just as solid as the princes'. They had been declared bastards after it came to light that their father was actually married to someone else when he married their mother, while Edward was tainted by his father's treason. Many think that George, his father, knew of the first marriage, thus his own imprisonment and execution. But while Richard sent Edward to live in Richard's wife's household, when he came to the throne, Henry VII thought him enough of a threat to throw him in the tower.