I’m giving a lecture Sunday about “Macbeth” and its relation to real magical traditions. Accordingly, I’ve looked up records of real witchcraft trials. Below is a database of cases from 1602-1635. “Macbeth” was supposedly written around 1605, so these cases are pretty close to the time period. It’s a fascinating, and sometimes gruesome look at the methods used to try people (mostly women) for an “invisible crime,” around the same time Shakespeare was dramatizing that crime onstage: http://witching.org/production/brimstone/detail.php?mode=city&city=London%20(Newgate%20Prison).