Tadayuki and Yasunori taught Seimei Tenmondo and Koei, Yasunori's son, Rekido, which led Ommyodo to completely encompass Tenmondo and Rekido from the end of the Heian period through the Middle Ages, allowing the Abe and Kamo clans to dominate the world of Ommyodo as the two Soke (originators).
忠行・保憲は晴明に天文道、保憲の子光栄に暦道を伝え、平安末期から中世の陰陽道は天文道・暦道を完全に取り込むとともに、天文道の阿倍氏と暦道の賀茂氏が二大宗家として独占的に支配するようになった。