Fujiwara Kyō-ke

The Fujiwara Kyō-ke (藤原京家) was a cadet branch of the Fujiwara clan of Japan.

History
It was founded by Fujiwara no Maro

Maro had three brothers: Muchimaro, Fusasaki, and Umakai. These four brothers are known for having established the "four houses" of the Fujiwara.