La Llorona

According to folklore, La Llorona (, or approximately "lah yoh-ROH-nah", Spanish for "the crying woman"), sometimes called the Woman in White or the Weeping Woman is the ghost of a woman crying for her dead children that she drowned. Her appearances are sometimes held to presage death. There is much variation in tales of La Llorona, which are popular in Mexico, the United States (especially in Mexican-American communities), and to an extent the rest of the Americas.
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[Folklore] La Llorona, the Crying Woman, is a Hispanic bogeywoman, the ghost of a woman who had murdered her own children. She now haunts by water and haunts men who drink or run around on their wives (for it was a man who caused her to slay her offspring). She is said to weep blood (or black tears) from empty eye sockets and feeds on children's terror.