Eventually Robert Trelawny, who had become Member of Parliament for Plymouth (and despite his royalist sympathy) persuaded the king to act. On 21 April 1641 the letters patent were signed and sealed.
It was eventually Robert Trelawny, a member of parliament from Plymouth with royalist leanings, who convinced the monarch to take action. The letters patent were then formally signed and sealed on 21 April 1641.