Well, the Catholic, Anglican, Lutheran, Oriental Orthodox and Eastern Orthodox Churches venerate Stephen as a Saint but all the representations of him actually have actual stones shown, and since he actually was a Jew killed by Jews in 48 AD, according to the biblical references, I'm having trouble finding a marijuana reference that fits.  

But theology is so changeable, maybe in another 50 years or so that will be the new doctrine according to one of the religions who already see him as a Saint or a new religion will emerge with that 'truth' as part of their catechism.

More of those mysterious ways we keep hearing about, no doubt.