Gildea is a surname.
Although it's spelt "Gildea" it's actually pronounced "gilday". Akin to the Irish surname "O'Shea"
Notable people with the surname include:
Damien Gildea, (born 1969), Australian mountaineer and Antarctic explorerthe Gildea Glacier is named after himJames Gildea, (1838–1920), British Army officer and philanthropistJames H. Gildea, (1890–1988), American newspaperman and Democratic member of the US House of RepresentativesJohnny Gildea, (1910–79), American football playerLorie Skjerven Gildea, (born 1961), attorney and Chief Justice of the Minnesota Supreme CourtIain Gildea, (born 1975), Scottish artist and makerRobert Gildea, (born 1952), professor of Modern History at Oxford UniversityTom Gildea, (born 1939), Irish independent politicianWillie Gildea, (born 1888), Scottish soccer player