just found this - might be a lead :
"The following morning, he rode out of the city over the old Bow Bridge on his way to fight in what became known as the Battle of Bosworth – the last battle of the Wars of the Roses. Legend has it that his spur hit a stone on the bridge as he crossed it, and an old wise woman among the crowd prophesised that his head would strike the same stone on the way back.
On August 22nd, after fighting bravely to defend his crown, Richard was killed in battle and Henry Tudor became King of England. Richard’s naked body was slung over a horse and brought back to Leicester, entering the city across Bow Bridge. His head allegedly struck the stone as the old woman had predicted. "
I'll try and find where this was
Diddy