John Moore (regicide) John Moore (regicide) Colonel John Moore (1599–1650) was one of the regicides of King Charles I. John Moore was born into one of the oldest noble Moore families in England in 1599. By the early 1640s, John Moore (who was by now a Member of Parliament for Liverpool) was heavily involved with the early shipping trade, forging connections in Barbados. When English Civil War broke out in England in 1642, Moore pledged his allegiance to the Roundhead Parliamentarians as did most of Liverpool's burgesses, who were largely of Puritan stock. The nobles and gentry formed the bulk of the Cavaliers
Regicide killed in battle by their subjects (for example Richard III), but none of these deaths are usually referred to as regicide. The word regicide seems to have come into popular use among foreign Catholics when Pope Sixtus V renewed the papal bull of excommunication against the "crowned regicide" Queen Elizabeth I, for—among other things—executing Mary, Queen of Scots, in 1587. Elizabeth had originally been excommunicated by Pope Pius V, in "Regnans in Excelsis", for converting England to Protestantism after the reign of Mary I of England. The defeat of the Spanish Armada and the "Protestant Wind" convinced most English people