Despite being an American, Robert Lorenz decided to keep the film as authentically Irish as possible, not only employing an all-Irish cast, but also employing an all-Irish crew.
When Finbar is looking through Kevin's record collection, the album he has in his hands is Live! In Europe by Rory Gallagher.
Liam Neeson and Ciarán Hinds previously starred in Excalibur (1981) and Silence (2016) together, but never shared a scene in either movie.
In the scene in the bar in Bantry, Finbar (Neeson) was reading Crime and Punishment.