Rionach O'Neal

This Female Student was Sorted into  Gryffindor House in the 1970s and befriended Parvati Patil, Cho Chang and a Gryffindor boy. In 1995, she joined Dumbledore's Army and practiced defensive magic while Dolores Umbridge refused to teach practical Defence Against the Dark Arts. While she walked to the Room of Requirement with her friends, she had her wand raised, ready for Slytherins, but was actually being followed by Mr. Argus Filch and Mrs. Norris.

Biography
Sometime in the 1980s or early 1990s, she came to be educated at Hogwarts School of Witchcraft and Wizardry and was Sorted into  Gryffindor House. Her Head of House was Minerva McGonagall, the Transfiguration Professor. She also befriended Cho Chang and Parvati Patil.

In 1995, Dolores Umbridge became the Defence Against the Dark Arts teacher and refused to teach practical classes. In order to counter her, Dumbledore's Army was formed. She joined the group along with many other Gryffindors and was seen walking to the meetings with  her wand raised. Unbeknownst to her, she was being followed by Argus Filch and Mrs. Norris, who were trying to discover what the group was up to.

One of the meetings that she attended was when Nigel Wespurt practiced Expelliarmus on Harry Potter, and later Hermione Granger on Ronald Weasley. When Hermione threw Ron across the room, she was one of the students who laughed at him. She later fussed over, and laughed with, Hermione along with the other girls. Another meeting she attended was at Christmas when Neville finally managed to perform the Disarming Charm and she immediately stopped practicing and talked awestruck to her friend. When Harry Potter decided that there would be no more meetings until after Christmas, she joined in the sighing and said something sadly to Padma Patil. However, she still joined in the clapping after Harry's speech on how well everyone had done.

While the Army practiced the Patronus Charm, Dolores Umbridge and the Inquisitorial Squad broke into the Room of Requirement and took everyone, including the Gryffindor girl, out of the room. Albus Dumbledore was later suspended and she watched as an Educational Decree declared Dolores Umbridge the new Head of Hogwarts.

Background Information

 * It is more than possible that this Gryffindor student is either Luca Carruse or Alice Tolipan, the two unidentified girls who signed the D.A. member list.
 * She may also be Sally-Anne Perks, a student whose House was never specified, although she was sorted in 1991.
 * A few more possible identities are Quirrell, Amanda, Fay Dunbar, Malone, Lil Moon, Rivers, S. Roper, Smith, Runcorn or Spinks.

Appearances

 * Harry Potter and the Order of the Phoenix (film) (first appearance)