Census of Ireland 1871: Part I, Area, Population, and Number of Houses; Occupations, Religion and Education, Volume I, Province of Leinster, Based on decline in Drumbaragh Townland bet 1841 and 1871, p. 687. https://archive.org/details/op1249904-1001/page/n686/mode/1up
bbc.co.uk
An Fháinleogდაარქივებული 18 August 2020 საიტზე Wayback Machine. Chapter 6. "drochshaol, while it can mean a hard life, or hard times, also, with a capital letter, has a specific, historic meaning: Bliain an Drochshaoil means The Famine Year, particularly 1847; Aimsir an Drochshaoil means the time of the Great Famine (1847–52)."
Kelly, M.; Fotheringham, A. Stewart (2011). „The online atlas of Irish population change 1841–2002: A new resource for analysing national trends and local variations in Irish population dynamics“. Irish Geography. 44 (2–3): 215–244. doi:10.1080/00750778.2011.664806. ციტატა: „..population declining dramatically from 8.2 million to 6.5 million between 1841 and 1851 and then declining gradually and almost continuously to 4.5 million in 1961“
Éamon Ó Cuív, [1]დაარქივებული 17 May 2020 საიტზე Wayback Machine. An Gorta Mór – the impact and legacy of the Great Irish Famine
An Fháinleogდაარქივებული 18 August 2020 საიტზე Wayback Machine. Chapter 6. "drochshaol, while it can mean a hard life, or hard times, also, with a capital letter, has a specific, historic meaning: Bliain an Drochshaoil means The Famine Year, particularly 1847; Aimsir an Drochshaoil means the time of the Great Famine (1847–52)."