Isn't that just the Philidor?
https://www.chess.com/forum/view/chess-openings/since-when-was-the-philidor-called-the-lion
https://www.chess.com/forum/view/chess-openings/the-black-lion-defenses
https://en.chessbase.com/post/new-dvd-simon-williams-the-black-lion
Lol.... check the move order... after 3.Nf3 there is N×e4..... Black is already winning.
@ilusmte
Not the point. Just transpose move then.
@notmtwain
Yes, it's the philidor.
But as I'm sure you know, people started calling a few philidor variations the lion.