@Cattleya i don’t see why not. Just as @Susurrus said, my Matron is Hekate, my Patron is Thor. And before Hekate claimed me The Morrigan was my Matron. Even tho she is no longer my matron i still call upon her for aid. She always comes to my call. Just as the others do. Athena and Danu have also made their presence known at times.
U also dont have to have any dieties. With dieties ALWAYS show the utmost respect.