When reading mythology one must be aware of the difference that can be found in the telling of each story. Many of the basic themes are repeated, but details and story lines vary noticeably from teller to teller, ethnographic region to ethnographic region, and century to century.
Think of it this way, myths are stories that have been told and retold for centuries. No one wrote them down until about 800 BCE. That’s a very long time to be sharing stories.
But these variations do make it easier for a writer to find some aspects that deviate from the recognizable myth. I took advantage of these differences when I constructed the Children of Khaos Universe because I didn’t want it to be this predictable story that we all learned in school. I wanted it to be familiar but different. So I twisted mythology to fit the world I created.