History tells us that they were murdered, and three different people are said to have reasons to do away with the boys but
nothing conclusive has ever been found to prove anything against any of them. Even though no bodies were ever found, Richard III is still seen as their murderer.
It they were not dead in 1483, what happened to them?
Post Script 26th June 2017
Well, we may be about to find out.
Matthew Lewis's new book is due to be released this September,
"The murder of the Princes in the Tower is the most famous cold case in English or British history. Traditionally considered victims of a ruthless uncle, there are other suspects too often and too easily discounted. There may be no definitive answer, but by delving into the context of their disappearance and the characters of the suspects Matthew Lewis will examine the motives and opportunities afresh as well as ask a crucial but often overlooked question: what if there was no murder? What if Edward V and his brother Richard, Duke of York survived their uncle’s reign and even that of their brother-in-law Henry VII? There are glimpses of their possible survival and compelling evidence to give weight to those glimpses which is considered alongside the possibility of their deaths to provide a rounded and complete assessment of the most fascinating mystery in history."
Roll on September, that's what I say!