What is more correct?

[CheertheSecond]

So when referring to the Ancient Greek's classical demigods what is more correct? Olympic Heritage or Olympian Heritage?

 

[Cannight]

I've always heard it referred to as Olympian

 

[Zinless]

I prefer Olympian. Olympic is more closely associated with the Olympic games than the gods, for me at least.

 

[Dark_Phoenix_Zaetyk]

Probably Olympian ...i am a half bake historian

 

[3guanoff]

Can't go wrong with Olympian gods.

Google Books Ngram Viewer

Google Ngrams: gods=>olympic, gods=>olympian, olympian gods, 1500-2019

books.google.com

But looking at the etymology, both seem alright.