The monarch of the United Kingdom is Supreme Governor of the Church of England—at the time of the proposed marriage, and until 2002, the Church of England disapproved of, and would not perform, the remarriage of divorced people if their former spouse was still alive. Constitutionally, the King was required to be in communion with the Church of England, but his proposed marriage conflicted with the Church's teachings. Additionally, at the time both the Church and English law only recognised adultery as a legitimate ground for divorce. Since she had divorced her first husband on grounds of "mutual incompatibility", there was a possibility that her second marriage, as well as her prospective marriage to Edward, would be considered bigamous if her first divorce had been challenged in court.