[Senator Goldwater]

But Richard was the immediate beneficiary.

[moose07]

Before the young king could be crowned, Edward IV's marriage to the boys' mother Elizabeth Woodville was publicly declared to be invalid, making their children illegitimate and ineligible for the throne.
On 25 June an assembly of lords and commoners endorsed these claims.
The following day, Richard III officially began his reign.
He was crowned on 6 July. The two young princes were not seen in public after August and there arose subsequently a number of accusations that the boys had been murdered by Richard, giving rise to the legend of the Princes in the Tower

wiki

[chae]

I tend to think it was Tudor. If Elizabeth woodville really believed Richard had her sons killed, she wouldn’t have let her daughter elizabeth go to Richards court and leave sanctuary. Also, as their parents marriage had been declared invalid, Richard was the rightful heir in that case. Henrys claim was that his great grandmother was catherine of valois, who had been married to a king. I also think that Richard was very honorable, and I can’t see him doing that, but can totally see tudor having those boys murdered. He and his son did their best to wipe out any person with any drop of royal blood.