The word 'Miyaza' came into being after the early-modern times, especially in the areas around Western Japan (in Eastern Japan, a designated 'Sohonke' [main branch of a school or religion] mainly took in charge); however, the origin of the group was traced back to the end of the ancient times.
「宮座」という語が出現するのは近世以後なおかつ西日本を中心とした地域である（東日本では特定の「総本家」が主宰する事例が多い）が、その組織の由来は古代末期にまで遡る。