Source website for 'The Society of Colonial Wars in the State of Connecticut' http://colonialwarsct.org/index.htm:
John Meigs was sent by night on horseback to New Haven by Gov. Leete to warn the Regicides that the pursuivants were on their trail, the distance about eighteen miles through thick forest.
Regicides was the name given to those judges and court officers responsible for the trial and execution of Charles I in 1649. After the Restoration (1660) of the monarchy they were excepted from the general pardon granted by the Act of Indemnity. At that time 41 of the 59 signers of the king's death warrant were still alive. Fifteen of them fled: William Goffe, John Dixwell, and Edward Whalley went to New England; several went to Germany and Holland; and Edmund Ludlow and four others went to Switzerland. Warrants were issued and they were soon pursued in New England, but the locals effectively hid them for years. When the danger lowered, they fled from Boston to New Haven, and for a long time occupied a cave not far from that place. Finally they made their abode in the remote town of Hadley, where they were joined by Colonel John Dixwell, another "regicide," who finally settled in New Haven. In Hadley, Whalley died. Goffe survived him until after King Phillip's war; but from the time when they took up their abode there, in disguise, they disappeared from public view.