According to Edred (“Bad Boy of Ásatrú”) Thórsson's ground-breaking 1999 work of revisionist witch history, Witchdom of the True, those seeking Keltic origins for Wicca are barking up the wrong tree of life.
They should instead, he says, be sniffing around the roots of Yggdrasil. Historically speaking, the Lord and Lady of modern Wicca, he holds, are actually none other than Frey and Freyja.
It's a contentious idea, especially among contemporary heathens.
We don't know whether or not the heathen English worshiped Frey and Freyja. It's certainly possible that they did, but we have no proof. (Anglo-Saxonist Stephen Pollington calls the evidence "circumstantial.") Considering how little we know about pre-Christian Anglo-Saxon religion, the lack of evidence doesn't prove much.
If, however, the Hwicce—the Anglo-Saxon tribe which, according to maverick archaeologist Stephen Yeates, gave rise to modern witchery—did indeed know Frey and Freyja, we can say what they would likely have called them. Both Norse names have cognates in the Old English word-hoard.