‌Mary and John were married in a religious ceremony on July 9th, 1804. They had a son and a daughter, named John William and Caroline.
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Children
Caroline Montagu
Caroline was born on October 7th, 1808 in London, England. She died at the age of 25 on April 30th, 1834.
John William Montagu
John William was born on November 8th, 1811. He died at the age of 72 on March 3rd, 1884.