I don’t know how we wound up on Pilgrim’s Way, legendary site of King Arthur and Queen Guenevere’s graves. My wife Harriet and I stopped in Glastonbury last Sunday, intending only to recharge our EV on the way to Stonehenge, but there we were, trudging up Wearyall Hill in the rain. Joseph of Arimathea is supposed to have traveled the same path 500 years before Arthur, planting his staff and seeing it sprout into a “Holy Thorn” tree (crataegus monogyna), incarnation of Jesus’s cr...