Those arrested on Tuesday include Ryan Ackroyd, aka “Kayla”; Jake Davis, aka “Topiary,” from London; Darren Martyn, aka “pwnsauce,” and Donncha O’Cearrbhail, aka “palladium,” from Ireland; and Jeremy Hammond, aka “Anarchaos,” from Chicago.
http://www.wired.com/threatlevel/2012/03/lulzsec-snitch/