William J. Brennan, Jr. | Colt Brennan | Walter Brennan | William Brennan | T. Corey Brennan | Michael Brennan | Joseph Brennan | Ciarán Hinds | Brennan Center for Justice | Sarah Rees Brennan | Peter Paul Brennan | Moya Brennan | Kathleen Brennan | Electoral division of Brennan | Daniel Brennan, Baron Brennan | Ciaran O'Brien | Ciaran Griffiths | Ciarán Carson | Christine Brennan | Brennan Manning | Brennan | Thomas E. Brennan | Martin Brennan | Lisa Brennan-Jobs | Kip Brennan | Justice Brennan | John Brennan | Gerard Brennan | Ciarán of Saigir | Ciarán Murphy |
He has written and recorded with various bands and notable musicians, including My Sister's Machine singer Nick Pollock, Clannad singer/bassist Ciaran Brennan, Edie Brickell, Malfunkshun guitarist Kevin Wood, and many others.