Who Do You Think You Are? is a six-part Irish genealogy documentary series that first aired on RTÉ One in 2008. In each episode, a popular Irish personality embarks on a journey to trace their family tree. The series is based on the original version of the franchise, broadcast by the BBC in the United Kingdom.
In the first episode, RTÉ news reporter Charlie Bird discovered his great-great-grandfather had been involved in the Battle of the Nile and served under Admiral Nelson himself, whilst Bird also discovered that his grandfather was a bigamist.
In the fifth episode, RTÉ presenter Pamela Flood travelled through "19th-century Dublin, taking in red light districts, millionaire solicitors, pawnbrokers, contested wills, illegitimate children and murder". She met historian David Nolan, who has written a history of Corballis House, where her granny was sent to stay; they subsequently discovered she was born out of wedlock.
A second series aired in September 2009.