Henry Marten (regicide) Henry Marten (regicide) Henry Marten (1602 – 9 September 1680) was an English lawyer and politician who sat in the House of Commons in two periods between 1640 and 1653. He was an ardent republican and a regicide of King Charles I of England. Marten was the elder son of the successful lawyer and diplomat Sir Henry Marten; his other known siblings were a brother, George Giles Martin, and four sisters, Elizabeth, Jane, Mary, and Agnes . Henry "Harry" Marten was born at his father's house on 3 Merton Street, Oxford, Oxfordshire, England (UK). and educated in the same city.
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