I'm uncertain of the provenance of this icon. The internet suggests "Mexican folk art," and that could be right, but I don't find anyone using the image who explains where it comes from. What I did find, via Google, was this nice post on how the devotion developed. He looks meek and humble of heart here, I think.
Update: an internet friend says this is, "Icon of the Sacred Heart painted by Clotilde Devillers for the Abbey of Saint Madeleine." Mexican, French, whatevs!
