When Lady Mary’s son was determined to go to sea and his parents refused to consent, he ran away. After exchanging his clothing for those of a poor boy, young Montagu set off as a sailor.
Lady Mary was distraught at his disappearance and spread his description by word of mouth.
Ultimately, the ship’s captain discovered her son, and the marks the smallpox inoculation left on his arm confirmed his identity.
Lady Mary’s son returned home and a happy family reunion took place.