Where can I find a Hungarian half-breed?

I’m working on the "Horseman" challenge—the 10th and final task—and that’s the only one I’m missing. I’m playing as John. I’ve searched near Blackwater and Armadillo, but found nothing—not even by the fisherman’s shack. I’ve tried reloading and restarting the game. Any advice?

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u/boreddanya111 — 1 day ago