Bakara country, is bona ni pasogit of 6 (six) as the hereditary clan customary landowners. Six genera are represented by the elders called the King of Bius. Stunning as the king of traditional leaders, providing the rules and customs that represent the limits of territorial unity of the clan that social identity is a genealogical ties. Stunning king representing each clan in making custom, held a traditional ceremony and the decision to hold a religious ritual which involves belief in ancestors.
Stunning kings in Bakara called Sionom Ompu (Six Elders) which is the elders of each clan: a) Bakara, 2) Sinambela, 3) Sihite, 4) Simanullang, 5) Simamora (al Purba, Manalu), and 6 ) Marbun (Lumbangaol, Banjarnahor). The Stunning Kings Si Onom Ompu recognize and appoint Raja Sisingamangaraja as "primus interpares", which is a leader among leaders, the holder of the highest supremacy of the Kings at the Bakara.
Si Onom Ompu position as King of Bius until now maintained well as customary holders and other stakeholders in the State Bakara. Any events or ceremonies that were held in the State Bakara must be attended and blessed by the elders, or delegates appointed elders from each clan are descendants of Si Onom Ompu.