"The God of Mers once used to be an immortal God until he was banished from heaven. He was a close friend of the God of Death, Atlas, and both friends possessed divine powers. God Zephyr's divine powers were not as strong as Atlas's because he was a mixed-race child. But still, it is said that Atlas wanted to be the only person in the heavens who had divine powers and hence he plotted against our God and got him banished from heaven."
From Aleister's memories.... the truth was different. Esme realized it. Marilyn confessed to having plotted against Zephyr for not stopping his friend from going after another woman who was Aleister's mother.
Maybe the Norwell family did not get the whole information about the situation.