The clans had three specific goddesses who presided over their sealmasters- each one tasked with carrying a specific portion of the Memory of Time.
The story of gods and demons and heroes, the accounts of history, songs for the dead, words from the living, the screamings of fate and the laughter of chance, prayers to the greater gods; music people and stars danced to.
Three goddesses the sisters pray to, goddess of stars, goddess of earth, goddess of sun. Three and only three- all other gods are ignored.
Curiously enough, the goddess of the moon is said to have been slain by the first of their clan. Funny- a rabbit, killed by a crow.