The second one I mentioned would not be as out of place as many may think. Trial by combat was a common practice in medival times. Here are some more informations http://en.wikipedia.org/wiki/Trial_by_combat (or in german for those who do not speak english that well http://de.wikipedia.org/wiki/Gerichtskampf)
This has also been very well displayed in game of thrones for several times though with the difference that these fights also could be fought by surrogates (i hope this is the right word in this case). Do you remember the fight between Ser Vardis and Bronn?
"I am a Paladin!"
>OMG, Malthus, there are no damn paladins in Battle Brothers...<
"OK, OK! Then I´m a wrecked down minstrel drunkard pretending to be a paladin, singing so wrong in the midst of battle that even the undead run in fear... Better?!"
