Native Language in Ritual?

spine detail
(Photo credit: Burns Library, Boston College)

I’ve recently decided I want to include more Irish in my practice since I feel it has a greater connection to the Irish pantheon I work with. My grasp of Irish isn’t particularly good (‘learned’ it in school, but my first language is English) so it will be a challenge.

Does anyone else use the language native to where ever the region your deities are from and do you feel it is important to the core of your practice or just something to add to or enhance it but not necessarily vitally important to it?

Also if you do, how much do you use, just a few terms or for the entirety of the ritual/practice, etc?

Hope to spark an interesting discussion.

Native language in ritual?