My husband’s family is descended from John Cragin (sometimes spelled Craggin) who was one of the Scots prisoners. The story is he contacted smallpox aboard ship and was in danger of being thrown overboard but a young girl Sarah Dawes pleaded for his life and agreed to nurse him to health. Some years later the two were wed.
Some additional details,
https://www.oocities.org/gingercleo/JohnandSarah2.html
Ocean travel was hazardous. One of my great-great grandfathers and his family emigrated from Ireland to Canada in 1849. A cholera epidemic swept the ship while on the voyage. My ancestor was carrying a New Testament bible and recorded in it the death of his wife and several of his children. He and my great-grandfather survived and made it to Canada.