The Mror Holds are divided into twelve holds, each bearing the name of the ruling clan that exercises authority within that region. These twelve clans are the foundation of Mror culture, and every citizen owes allegiance to one of these clans. This section provides an overview of the twelve ruling clans, including their most remarkable mineral resources, their established feuds, and the virtues they assign to their mythic founder—and thus, the virtues they strive to embody. It’s worth noting that almost all Mror value many of these virtues, but in their stories, one founder is acknowledged as the best at that thing. Clan Doldarun certainly values strength, but in the story, Doldarun’s defining feature is his courage and integrity, while Droranath is known for his untamable strength. Likewise, while each clan includes suggestions for possible character classes, any character could come from any clan; in particular, talespinner bards and entertainers are found in every clan.
While all Mror are bound to one of the ruling clans, there are many lesser clans, and below those, tenant families. In creating a Mror character, it’s up to you whether your character is tied directly to a ruling clan or if you’re part of a lesser family. While many Mror take inspiration from their ruling clan, they don’t all share the same virtues; in creating a Mror family of your own, you can decide what their celebrated virtues are.
Among the Mror, the dwarven subraces largely reflect their culture and personal aptitude, not bloodlines, and a Mror dwarf can take any subrace. For example, mountain dwarves have expanded martial training, likely due to militia service in Dol Udar, while dwarves with the Mark of Warding have a blood tie to House Kundarak in their family tree.
Source: Exploring Eberron