http://img172.imageshack.us/my.php?image=hmmehem3.pngExplanation:
Red Square - Common Ancestor, Grandfather, First High King and Grand Warlord of the Clan.
Orange Square - First High King's First Son; Lokk's, Garundir's and Grakex's Father; Second High King of the Clan.
Light Blue Square - First High King's Second Son; Dorgain's Father; Second Grand Warlord of the Clan.
Purple Square - Lokk Ironheart; Second High King's Son; Third High King of the Clan.
Green Squares - Garundir and Grakex Ironheart; Second High King's Sons; Dwarflords of the Clan.
Dark Blue Square - Dorgain Rurik Ironfist; Second Grand Warlord's Son; Third Grand Warlord of the Clan.
Pink Squiggle - Dorgain's Siblings (if any).
How's that for a family tree, hmm?