^The Oireachtas members database and ElectionsIreland.org list two entries for John Beirne Snr and John Beirne Jnr, this is incorrect. John Beirne Snr (1860–1949) was a farmer. His son, John Beirne Jnr (1893–1967) was the Clann na Talmhan politician.
^White, Anthony (2018). Irish Parliamentarians: Deputies and Senators 1918–2018. Dublin: Institute of Public Administration. p. 20. ISBN978-1-91039325-3.
^"John Beirne Snr". Oireachtas Members Database. Retrieved 9 April 2009.
^"John Beirne Jnr". Oireachtas Members Database. Retrieved 9 April 2009.