Graffiti at Richelieu 3 (signed)

Graffiti utterly surrounds this one remaining part of the once vast entrance courtyard at the site of the home of Cardinal Richelieu.

It's of fascinating dates; some goes back to 1906, some to the first world war, some to the second – who made that? – and one piece appears to be by the hand of a descendent of the Cardinal!

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This one is particularly interesting, and must have taken a lot of skill to make; it's in cursive writing — it seems to be the person's actual signature!