Originally, they were turnips hollowed out and equipped with candles to light the way of "guisers" and beggars roaming about on All Hallow's Eve for a bite to eat or rousting neighbors door-to-door for a donation to their cause. With their mass migration to the United States after the potato famine, the clever Irish replaced their illuminated turnips for more accommodating pumpkins. Carved in various grotesques and ghoulish faces; maladjusted spirits are kept at bay or frightened away entirely by the sight of these luminous lamps. Various legends speak of the name Jack. Most popularly is the persona of Jack as a weather sprite (Jack-in-the-Green, or Jack Frost). Undeniably, this Halloween symbol welcomes the oncoming winter season while simultaneously lighting the night.