Some believe that Bram Stoker [1847 - 1912], who was born and raised in Dublin, Ireland, was inspired to write Dracula based on an Irish legend of a vampire known as Abhartach. Stoker lived in Ireland around the same time as Patrick Weston Joyce [1827 - 1914] was sharing his tales of Abhartach. It is Abhartach, not Dracula, that is the vampire featured in this film.
After a location scout on the film Yesterday (2019), director Chris Baugh wrote the screenplay in just five days after visiting Bram Stoker's actual grave in Golders Green, Barnet, NW11NW2, London, England.
Boys from the County Hell is also a song written by Shane Macgowan and performed by The Pogues in 1984.
In the final bar scene the song heard playing in the bar is the 1987 song entitled "Dream Warriors" by Dokken, which was originally written for Pesadilla en la calle del infierno 3, los guerreros del sueño (1987).
The fictitious town of "Six Mile Hill" seen here in this film is named after one of the films Production Companies: Six Mile Hill Productions.