Can someone enlighten me? Can the royal family actually kill a high ranking noble just like that? Is it actually allowed historically? Marquis is pretty dang high
totally possible if the charges are opposition against royalty, rebellion or unjustified actions against other nobility, like damaged property or assault, depending on severity of the case. by trial or royal decree, they can face heavy punishment. in the members of executed english nobility they had ranks ranging from baron, viscount, earl and marquess up to duke.
its a matter of power the judge has over the accused noble.