Charles I tried desperately to assimilate the Scottish Presbyterian kirk with the English Anglican church, when he introduced a new Common Prayer Book to Scotland in 1637 an Edinburgh woman called Jenny Geddes famously reacted by throwing her stool at the Dean of St Giles Cathedral's head - by stool I mean what she was sat on, she wasn't throwing handfuls of shite at the guy. The result of Charles's constant meddling in Scotland's religion was the National Covenant signed at Greyfriars Kirkyard in Edinburgh in February 1638, the Covenant was sent around the country and pretty soon acquired more signatures than is required to send something to the EU post-Brexit