Yeah... the Magnifique wreck. She was a 74-gun French ship of the line that was going to be a gift for the new American navy in the late 1700s. The American pilot bringing her into the harbor was late in getting the crew to react to a shifting wind, and the Magnifique ran aground on Lovells. Her armaments were salvaged and fitted to the comparably sized warship America that was just finishing construction under the supervision of John Paul Jones. When congress decided to make the America a gift of apology to France, Jones was so upset he resigned his comission as admiral, and sailed off with the French crew aboard the ship he had built.
The pilot, who later became Deacon of a Boston church, never quite lived down the reputation as the guy who wrecked the Magnifique. Graffitti was occasionally found scrawled on the church door, along the lines of the following: "Don't you send this ship ashore, like you did the 74".
When the Narrows were widened (ironic, no?) and dredged in the 1800s, the Corps of Engineers raised a number of quality ships timbers that were believed to have been part of the wreck, and a later attempt at salvage yielded a quantity of copper sheathing. You'll occasionally hear reports (which I personally believe are a big steaming crock of BS) that people snorkeling/diving in the western cove on Lovells have come across stacks of cannonballs. You never know though... keep an eye out.
I believe the last coins that were found that may have been from the wreck were in the old lighthouse keeper's garden on the island (likely buried there for safe-keeping).
That's all off the top of my head, and I make no particular claims to the accuracy of the information. It's just the way I remember it from my wreck research file.
