It’s fascinating what you have been able to retrieve about John Wilbank and in particular the link to John Bernhard who probably learned his trade under Wilbank. The location of Wilbank’s Foundry on Arch Street places it near the Foundry of John Stow who recast the cracked Whitchapel bell at his foundry on 2nd ST with the assistance of John Pass, iron founder of Mount Holly, NJ. John Stow could have been a mentor or colleague of John Wilbank. Just speculation at this point.
Harry Long, MD