Lex, Rex : The Law and the Prince. A Dispute for the just Prerogative of King and People. Containing the Reasons and Causes of the most necessary Defensive Wars of the Kingdom of Scotland, and of their Expedition for the ayd and help of their dear Brethren of England. In which their Innocency is asserted, and a full Answer is given to a Seditious Pamphlet, Intituled, Sacro-sancta Regum Majestas, or The Sacred and Royall Prerogative of Christian Kings; Under the Name of J.A. But penned by Jo