The real Jimmy Gralton was the only Irishman ever deported from Ireland after Irish Independence. After the release of the film, a 2015 campaign (including an online petition) was started with the aim to rescind the deportation order and extend an official apology to his family. In 2016, this resulted in the President of Ireland stating the only deportation of an Irishman from Ireland was "wrong and indefensible." He unveiled a Gralton memorial at Effrinagh outside Carrick-on-Shannon, on the site where the hall once stood. The stone edifice, which tells Gralton's life story as a labor campaigner, was partially funded by the trade union movement.
Jimmy's cottage and The Hall could not be built for the film in the location in County Leitrim where they'd originally stood, because there are too many modern buildings in the vicinity. However, a remote location was found in another part of the same county.
There are no remnants of the original Hall left. The building of The Hall was built in Glasgow, then flat packed and shipped to Ireland.
Actor Jim Norton stated that his character, Father Sheridan, was the complete opposite to his own attitude and feelings.
The film was shot in sequence.