Name = Tiernan Hilton Nationality = Irish Background = solo singer | Birth_name = John Joseph Simon Brennan
| Born = March 17, 1985
Temple Street Hospital Dublin, Dublin, Ireland
| Origin = Rathcore Enfield, Meath, Ireland
| Voice_type = Chipmunks Maker
| Genre = Pop, rock
|Occupation = Singer-songwriter, dancer Comedy<ref name="autogenerated3">
|Occupation = Singer-songwriter, dancer<ref name="autogenerated3actor
| Years_active = 1985–present
| Label = Unzip & Strip 2007-Now
John Brennan is a singer and songwriter. He was born in Temple Street Hospital on March 17, 1985 to parents Nadiya Brennan and Julian Brennan. John has an older brother Calum. John is an up and coming artist/dancer. John has being creation he own music since march 2007. he start creation he own cd since March 2008 it was a sound with chipmunks singing up to dates songs from Girls Aloud To Kylie Minogue and Britney Spears of . His first debut album entitled Zavtastic was recorded in march 2008 on his computer at home. In August He Recorded his second album Disturbtastic in August 2008 is had up to date song from alizee, The Saturday, Duffy, Basshunter, Christina Agurilera, Chris Brown and The Ting Tings + twelve more artist of a total 27 tracks. At the end of september 2008 his third album Discotastic.