Cassandra Trelawney

Cassandra Trelawney was a celebrated and famous witch and Seer. She was the great-great-grandmother to Hogwarts School of Witchcraft and Wizardry Divination Professor Sybill Trelawney. She possessed the Inner Eye, which was passed onto Sybill generations later.

Behind the scenes

 * "Trelawney" must have been Cassandra's married name. If her maiden name was Trelawney, then Sybill Trelawney's surname wouldn't be, as it would be whatever the surname of Cassandra's husband was. Additionally, Cassandra might have been a single mother.

Etymology
In Greek mythology, Cassandra was a princess of Troy. Her beauty caused Apollo to grant her the gift of prophecy. However, when she did not return his love, Apollo placed a curse on her so that no one would ever believe her predictions.

Appearances

 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Half-Blood Prince

Cassandra Trelawney