61%RatingSave Gender Masculine Usage English (Rare) Pronounced Pron. FLAN-ə-gən [key·IPA] Meaning & History From an Irish surname, the Anglicized form of Ó Flannagáin, itself from the given name Flannagán, which was derived from Irish flann "blood red" and a diminutive suffix. People think this name isRate·Details classic mature formal upper class natural strong strange complex serious Categories colors, Gundam characters, rare English, red, surnames