Place of Birth: Dublin, Ireland
Date of Birth: 14 November, 1987
Ethnicity: Irish
Brian Gleeson is an Irish actor. He is the son of Mary Weldon and actor Brendan Gleeson. His brother, Domhnall Gleeson, is also an actor.
On his father’s side, Brian is the grandson of Frank Gleeson and Patricia “Pat” Halpin.
On his mother’s side, Brian is the grandson of Niall Gerard Weldon (the son of Thomas Weldon and Mary Kelly) and Lily Sheils. Niall was an airline executive.
Source: Obituary of Brian’s maternal grandmother, Lily (Sheils) Weldon – http://notices.irishtimes.com