He spent much of his early career working in theatre , notably at the Abbey Theatre in Dublin . After playing Michael Evans in the original West End and Broadway productions of Brian Friel 's play Dancing at Lughnasa in the early 1990s , McSorley started to attract more TV and movie roles . He has appeared in many Hollywood movies including '' Braveheart '' ( in which his character " Cheltham " was decapitated by William Wallace at the battle of Stirling ) and '' In the Name of the Father '' . One of his most celebrated performances was his lead role in '' Omagh '' , a feature-length television drama depicting the effect of the Omagh bombing on the residents of the town . He is also known for playing " Father Todd Unctious " in the Christmas special episode ( " A Christmassy Ted " ) of the Channel 4 sitcom '' Father Ted '' . His film credits include '' The Constant Gardener '' , and he was also cast as Queenan in '' The Departed '' but had to pull out ( Martin Sheen took over the role ) . McSorley most recently played the role of Robert Aske in the Showtime historical drama '' The Tudors '' . He appeared in the 2010 movie '' Robin Hood '' , directed by Ridley Scott and starring Russell Crowe
Omagh bombing
Omagh bombing
Gerard McSorley