Cormac O'Brien

Auror Cormac O'Brien was an American wizard and one of the twelve original Aurors in the Magical Congress of the United States of America.^[1]

He died before reaching "old age".^[1]

Appearances[]

Pottermore (First mentioned)
HarryPotter.com (Mentioned only)

Notes and references[]

↑ ^1.0 ^1.1 Writing by J. K. Rowling: "The Magical Congress of the United States of America (MACUSA)" at HarryPotter.com

Magical Congress of the United States of America

Presidents	Josiah Jackson (1693-?) · Charity Wilkinson · Thornton Harkaway (c. 1760) · Able Fleming · Elizabeth McGilliguddy (c. 1777) · Emily Rappaport (c. 1790) · Seraphina Picquery (1920-1928) · Unidentified President (c. 1987) · Samuel G. Quahog (c. 2014)
Aurors	Abraham Potter · Achilles Tolliver · Berthilde Roche · Carlos Lopez · Cas Carneirus · Cormac O'Brien · E. A. Limus · Gondulphus Graves · Helmut Weiss · M. L. Minus · M. P. Carneirus · Mary Jauncey · Mungo MacDuff · Percival Graves · Porpentina Goldstein · Robert Grimsditch · Saranna Wilkinson · Theodard Fontaine · Wilhelm Fischer · Unidentified Aurors
Other positions	Apparition Examiner · Auror Commissioner · Captain of Aurors · Chief Auror · Chief of Staff · Director of Magical Security · Executioner · Federal Identity Commissioner · Federal Wand Permit Officer · Keeper of Treasure and Dragots · Obliviator · Surveillor of Activity
Other employees	Abernathy · Albert Perschky · Aristotle Twelvetrees · Ben Copper · Bernadette · Beryl · E. A. Limus · F. Wakefield · Holly Blackbird · Irene Kneedander · J. Ward · L. O'Sullivan · Low-level MACUSA functionaries · Magali Crowe · Paloma Proudfoot · Queenie Goldstein · Red · Ruby · Sam · Unidentified executioner (I) · Unidentified executioner (II) · Tour guide at the Magical Congress of the United States of America headquarters · Y. Blishen
Departments	Body for Protection of Magical Species · Department of Aurors · Department of No-Maj Misinformation · Department of Unidentifiable Magical Objects · Department for Confiscated Items · Federal Bureau of Covert Vigilance and No-Maj Obliviation · MACUSA Communications Department · · MACUSA Department of Magical Law Enforcement · MACUSA Investigation Department · MACUSA Surveillance Department · MACUSA Surveillance Wizarding Resources Department · Magical Cleaning Department · Major Investigation Department · Office for Magic Relations and Education · US Auror Divisions · Wand Permit Department · Wizarding Resources Department
Locations	Death Cell · Great Meeting Chamber · Lobby · No-Maj Fraternisation sub-division · Pentagram Office · Percival Graves' office · Register Office · Shabby basement meeting room · Typing Pool · Wand Permit Office · Young Wizards Daycare Center

[WW-1] 1.0 ^1.1 Writing by J. K. Rowling: "The Magical Congress of the United States of America (MACUSA)" at HarryPotter.com

[1]