Costello
biographical name
Cos·tel·lo
ˈkä-stə-ˌlō 
John Aloysius 1891–1976 prime minister of Ireland (1948–51; 1954–57)
Cite this Entry
“Costello.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Costello. Accessed 26 Nov. 2025.
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