“The Thousand Islands are a chain of islands that straddle the U.S.-Canada border in the Saint Lawrence River as it emerges from the northeast corner of Lake Ontario.” (Wikipedia)
“The Thousand Islands gave their name to the popular Thousand Island Dressing around the turn of the 20th century when Sophie LaLonde, of Clayton, New York who served the dressing at dinner for guests of her husband, a popular fishing guide, gave the recipe to Clayton hotel owner Ella Bertrand and New York City stage actress May Irwin (who shared it with hotel magnate George C. Boldt).”