Siberian Yagyuu
Formerly known as the Kita Yagyuu, the clan were ambushed by the Edo Yagyuu and most of their members were killed. A few survivors, including the leader Kita Ressai, were driven into Siberia. After living several years in Siberia, they changed their name to the Siberian Yagyuu. The leader of the Edo Yagyuu sent Yagyuu Juubei to finish them for good; this eventually led to his duel with Kita Ressai. Three hundred years later, like the Ryuujouji clan, the survivors of the Siberian learned about Yagyuu Juubei's successor and came to Japan to track down Jiyuu Nanohana. Because of their stint in Siberia, Russian is integrated into their language.
Read more about this topic: List Of Jubei-chan Characters