That's the thing about Wicca that really cracks me up -- all this arguing about whose "tradition" is the oldest. When, in actuality, these are all recently invented religions, same as modern-day Satanism. Satanists, however, readily admit to the fact that Satanism is an invented religion (or, more precisely, a philosophy), and even place the Year One, Anno Satanas, as starting in 1966. There's a bit of debate among Satanists as to whether I A.S. began on Walpurgisnacht of that year (April 30th), or on Jan. 1st -- but that's not really that big an issue.
The Gardnerians were founded in the 1950s by Gerald Gardner, and the Alexandrians in the 1960s by Alex Sanders. And even though members of either group may claim a pedigree dating back to the Burning Times, that doesn't make it so. Nor am I impressed that the Gardnerians were around a decade before the Alexandrians. I swear to the Horned One, I'm gonna invent my own cool religion and call all my followers "Nanaeians". :)