I remember reading about people, I think they were Celts, who some scholars think used to have two different pantheons, because there is a myth of two groups of Gods being at war with each other, but then they make peace, and is thought to symbolize how they combined this two religions into one.
But for the life of me I can't remember the name of this people and I need to reference them for a work I'm doing
Edit: This is not about homework but rather for my YouTube channel
There are several candidates for theomachy (war between gods) in Western mythology:
in Greek religion, the Titanomachy was a war between the old ruling group of gods, the Titans, and their descendants, the Olympians. The Gigantomachy was another war between the gods and the giants.
in Norse religion, the two groups of gods, the Æsir and Vanir, were sometimes at war
Celtic religion is very difficult to pin down because we have very few sources, and in fact their gods did not work in quite the same way. Most evidence suggests that gods were highly localised and tied to certain regions, and that the gods worshipped in, say, modern day Cardiff might not have been the same gods worshipped in modern day Bangor. It's also very tempting to say 'Celtic' when we really mean 'Irish and Welsh', which is inaccurate as these were very different cultures which we now, for some reason, group under the one name. However, with that out of the way, the pre-Christian Irish Gaelic divinities who were at war with one another were the Tuath Dé and the Fomhóraigh (Fomorians). The Fomorians were not specifically gods, but rather beings of the Otherworld.
It's also worth noting that we actually don't know if the uniting pantheons idea is accurate or not; it's just a theory to explain the pattern of god wars in mythology. We don't know if there is historical basis there or whether they're symbolic, or perhaps a mixture of the two. It may well represent other things, such as the battle between new and old beliefs, the struggle between morality and immorality, or even the nature of war itself as being unavoidable.
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