An En Guarde Quiz

What person that Errol greatly admired had once taught fencing?

Clues:

Fencing is not what he’s famous for.

It’s not certain whether he taught Errol.

He was very accomplished and respected in his profession, in which fencing skills were not required.

The below photo is not him. It is Aldo Nadi, who Errol also knew, but did not admire in the way he admired this quiz’s mystery man.

Photo below posted Wednesday, April 29, 1:23 pm:

Photo below added 1:45 pm Friday:

Photo below sdded at 4:44 pm Friday:

— Tim