La llorana was a woman married to a nobleman. But she grew jealous of her children getting more attention from her husband.
One day when her husband was out, she took her kids to their river near her house to bathe them. When she was in the river she kills her kids by doing them. When her husband found out he killed her.
Now she wanders the river bank looking for her lost children. She walks in a white dress and cries out "mis hijos".