Here is an article from an American website about the “Princes” and John Ashdown-Hill’s work towards determining the identity of the bones in that urn, as detailed in his “The Mythology of the Princes in the Tower”.
The article is rather good. It does fail to notice that Westminster Abbey is a Royal peculiar and so the Anglican hierarchy has no influence. Apart from that, the dental evidence suggests that the remains are unlikely to be related to Richard III, who has been analysed in great detail.
The mitochondrial DNA, which was integral to identifying Richard himself, is possibly understated here but modern scientific analysis, on the basis of this research legacy, could lead to any of the following conclusions:
1) The remains are of the wrong age, gender, era or even species.
2) Their mtDNA does not match that of Elizabeth Wydeville.
3) The remains are of more than two people.
4) The remains are of one mtDNA matching person and one other.
5) The remains are of two people of the right age, gender, era, species and mtDNA.
Conclusion 5 would positively identify them as Edward IV’s sons. Conclusions 1 and 2 would eliminate this possibility. Conclusions 3 and 4 would be more complex as a mitochondrially identical cousin disappeared from the same place sixty years later. The probability of the remains consisting of Edward V, Richard of Shrewsbury and their later cousin is surely exceedingly low, although that cousin or one “Prince” resting with an unrelated individual is more possible.