Could anyone from Game of Thrones present a threat to this real life historical figure?

Donia's Feats: Is strong enough to wield a 7ft, 15lb two-handed Zweihander greatsword with ease, killing multiple men in one swing, when I say multiple, I'm talking close to ten dude's, in one swing. He is also able to bend a coin in half with two fingers.

He also wields a giant secondary weapon, a battle cleaver, which is the size of a normal sword, possibly bigger.

As for miscellaneous weapons, he has a pike, an arquebus, and a katzbalger.

He's 7ft tall.

If you know about the man, lets say, for the sake of argument, that Westeros and Essos were responsible for his family getting raped and killed.