chapter 27 of William of Newburgh's 12th cent. history concerns the "Green Children" of Woolpit, whom I'd never encountered before, though there's a lot elsewhere on the web--


"Moreover, after they had acquired our language, on being asked who and whence they were, they are said to have replied, "We are inhabitants of the land of St. Martin, who is regarded with peculiar veneration in the country which gave us birth." Being further asked where that land was, and how they came thence hither, they answered, "We are ignorant of both those circumstances; we only remember this, that on a certain day, when we were feeding our father's flocks in the fields, we heard a great sound, such as we are now accustomed to hear at St. Edmund's, when the bells are chiming; and whilst listening to the sound in admiration, we became on a sudden, as it were, entranced, and found ourselves among you in the fields where you were reaping." Being questioned whether in that land they believed in Christ, or whether the sun arose, they replied that the country was Christian, and possessed churches; but said they, "The sun does not rise upon our countrymen; our land is little cheered by its beams; we are contented with that twilight, which, among you, precedes the sunrise, or follows the sunset. Moreover, a certain luminous country is seen, not far distant from ours, and divided from it by a very considerable river." These, and many other matters, too numerous to particularize, they are said to have recounted to curious inquirers. Let every one say as he pleases, and reason on such matters according to his abilities; I feel no regret at having recorded an event so prodigious and miraculous. "