Mary of Modena, James’s second wife, had…
September 1688 CE
Mary of Modena, James’s second wife, had given birth between 1675 and 1682 to five children, none of whom survived—with the blame popularly assigned to James's affliction with venereal disease in the 1660s.
James Francis Edward, her second son, is born on June 10, 1688, a month earlier than anticipated, and it is widely, and falsely, rumored that the child is not really hers but had been imposed upon the nation to ensure a Catholic succession to the throne.
Public alarm increases with the birth of a Catholic son and heir.
Moderate Anglicans could see his pro-Catholic policies as a temporary aberration when James's only possible successors were his two Protestant daughters, but the Prince's birth has opened the possibility of a permanent Catholic dynasty, and leads such men to reconsider their reticence.
Several influential Protestants, threatened by a Catholic dynasty, claim the child is "suppositious", and enter into negotiations with William, Prince of Orange.
William's desire to invade has become clear by September.
James, believing that his own army will be adequate, refuses the assistance of Louis XIV, fearing that the English would oppose French intervention.