[redleghunter]

People who call themselves Lutheran today disagree with Martin Luther on many of the key theological issues, just as people who call themselves Methodist have little in common with John and Charles Wesley.

True, but none of those men claimed to be infallible either.

[Tax-chick]

none of those men claimed to be infallible either

That's an interesting point. We can leave aside the Wesleys, who held themselves in the tradition of the Church of England and did not claim a unique theological truth, but more like an approach to Christian practice.

However, Martin Luther, John Calvin, and John Knox (and Arminius and Melancthon and other "losers" in the Reformation struggle) were sufficiently persuaded of their absolute Truthiness that they established states in which disagreement was punished with death. The way I see it, that's as near a claim of infallibility as makes no difference.