How could I rewrite this sentence " Richard III supposedly had the young princes murdered. Never found out what happened to them.
Richard III supposedly had the young princes murdered, but no one knows what really happened to them.
You might think about this.... Although historians have never discovered what happened to them, they believe that Richard lll supposedly had the young princes murdered.
You can also reverse it. Although historians believe that Richard lll supposedly had the young princes murdered, they have never discovered what actually happened to them.