Hello! First much like @Amaris_Bane, I am not Wiccan. I’m more of Celtic 
… but even so technically I work with more than one.
- Brigid - Celtic Light Goddess (Tending Brighid’s Flame, Tending Her Flame
Of the Element Fire) - The Morrigan - Celtic Dark Goddess
I also recognize & work with Mother Earth, the Moon…
It is perfectly okay to work with multiple deities & cross pantheons… it’s all that feels right & works for you. Celtic 
Culture, Spirituality, Paganism… is what I feel the connection to & I work with crystals, astrology… so there’s the eclectic side of it. Mostly Celtic though.