Gerald Gardner
From Tardis Wiki, the free Doctor Who reference
According to Jack Stimson's records, Mathilda met with Gerald Gardner "shortly before his death". This fact was just one of what he called the "right credentials" to be a kindred spirit — or, as Jessica Willamy put it, a "one of us" — in the counterculture movement of the 1960s. (PROSE: Wonderland)
Behind the scenes
Unremarked by Wonderland was the fact that Gardner was a leading member of the English Wiccan movement, who died in 1964.