Alexia Walkin Black

Alexia Walkin Black was a pure-blood witch. She was an early member of the House of Black, predating Arcturus Black I and Cygnus Black I, but her precise relationship to other known members of the Black family is unknown.

Etymology
Alexia is the feminin form of Alexis. The Greek name Αλεξις (Alexis), which meant "helper" or "defender", derived from Greek αλεξω (alexo) "to defend, to help". This was the name of a 3rd-century BC Greek comic poet, and also of several saints. It is used somewhat interchangably with the related name Αλεξιος or Alexius, borne by five Byzantine emperors.

Behind the scenes

 * This character appears only on the version of the Black family tree shown in the film adaptation of Harry Potter and the Order of the Phoenix. She was not included on the version of the tree which J.K. Rowling gave to a charity auction in 2006. However, according to director David Yates, Rowling provided the filmmakers with a copy of the Black family tree going back eight generations. The filmmakers presumably received a more complete version of the tree than the one auctioned off, which only goes back six generations.