During the war between Clan Caskbound and Clan Stonebridge, there reached a point where the embittered archons tried to make peace by contributing a child to marriage. The Caskbound archon sent his grown son Wilfram, and the Stonebridge archon sent his grown daughter Murdia (her annoying brother called her “Murd” and she hated it, but he mysteriously disappeared, and she preferred “Dia.”)
The marriage was a grim and heavily armed affair, and the subarchons didn’t waste any time making themselves and each other miserable. Wilfram and Murdia were totally wrong for each other (some would mutter for ANYONE) but forced into a marriage partnership they got downright vindictive.
Those who knew them on both sides were just relieved that their spite was pointed at someone else, and someone from the warring clan at that. The unexpected side effect was that a mutual dislike of the married couple proved to be the common ground that the prideful dwarves on both sides needed, and bonding on that common ground (“Aren’t Wilfram and Murdia the WORST?!”) they managed the peace that they could not find before.
The miserable union was the turning point, from war to peace.