Elizabeth Medora Leigh
Elizabeth Medora Leigh was the third daughter of Augusta Leigh. It is widely speculated that she was fathered by her mothers halfbrother Lord Byron, although her mothers husband Colonel George Leigh was her official father.
Three days after her birth, Byron visited Augusta and the baby. He later wrote to a friend, Lady Melbourne Oh! but it is worth while I cant tell you why and it is not an Ape and if it is that must be my fault. There was a folk belief, common in the 19th century, that a child born of incest would be an ape. Byron was forced to go into exile as a result of the scandal surrounding his breakup from his wife Annabella Milbanke and his relationship with Augusta.
Source: Wikipedia