Tests may be able to prove if the bones are connected to those of Richard III, although this will not determine an exact cause of death or who was responsible, of course. They will also not be able to determine a precise date of death, pinpointing it to somewhere between Richard's seizure of the crown and his death at the Battle of Bosworth, a crucial element in this investigation.
The bones were examined once before, in the 1930s, before the advent of DNA testing, when it was concluded that they belonged to children who were related to each other and to other known royal relatives. The bones were also found to be of children who were the same age as the princes when they disappeared.
Learn more about the historical background to The Sorcerers Letterbox, visit YouTube for the story behind the story of the novel, read an excerpt or listen to a reading from The Sorcerer's Letterbox on my website.