At this unfortunate moment, James (who in a second marriage had taken to wife Maria of the Catholic house of Modena-Este) became the father of a son. This meant that the throne was to go to a Catholic boy rather than to his older sisters, Mary and Anne, who were Protestants. The man in the street again grew suspicious. Maria of Modena was too old to have children! It was all part of a plot! A strange baby had been brought into the palace by some Jesuit priest that England might have a Catholic monarch. And so on. It looked as if another civil war would break out. Then seven well-known men, both Whigs and Tories, wrote a letter asking the husband of James's oldest daughter Mary, William III the Stadtholder or head of the Dutch Republic, to come to England and deliver the country from its lawful but entirely undesirable sovereign.