There is no historical significance in the names.

The names such as Enra, Kazamatsuri, and Arabuki are references to his older work, in this case Sanjin Sadou and his "Monster Town" oneshot series (see his Mizukami Satoshi Tanpenshuu compilation). Some mechanics are reused, such as the Fairy Eye. In the latter oneshot series, there are the Raidou and Kazamatsuri clans have passed down their magic swords and stuff to modern times with the two families taking care of the town's various demons and their hijinx.

All this probably implies that Sengoku Youko is in the same continuity with Sanjin Sadou and the oneshot series.

There is no historical significance in the names.

The names such as Enra, Kazamatsuri, and Arabuki are references to his older work, in this case Sanjin Sadou and his "Monster Town" oneshot series (see his Mizukami Satoshi Tanpenshuu compilation). Some mechanics are reused, such as the Fairy Eye. In the latter oneshot series, there are the Raidou and Kazamatsuri clans, who have passed down their magic swords and stuff to modern times with the two families taking care of the town's various demons and their hijinx.

All this probably implies that Sengoku Youko is in the same continuity with Sanjin Sadou and the oneshot series.