Charles Nightingale was a British travel writer in the latter half of the nineteenth century. In 1877 he visited the Confederation of North America and the United States of Mexico, and his observations were published in London in 1880 under the title An American Journey: Views of Mexico and North America in 1877.
Sobel quotes Nightingale's comments on the Mexican state of California: "This state has all the qualities of Manitoba with a far more salubrious climate than that northern paradise. The land is rich, the people friendly, the prospects inviting. Heaven, thy name is California!"
Nightingale has no entry in Sobel's index.