From Irish Róisín, meaning 'little rose.'
Róisín (anglicized as Roisin) is among the most poetically loaded names in the Irish language. A diminutive of rós, the Irish word for rose, it means simply "little rose" — but that simplicity is deceptive. The name became famous through "Róisín Dubh" (Dark Rosaleen), a sixteenth-century Irish poem and later a song that used a beautiful woman named Róisín as an allegory for Ireland herself, yearning for liberation under English rule.
The tradition of aisling — visionary poems in which Ireland appears as a woman — transformed Róisín into a name carrying the weight of an entire nation's longing. B. Yeats and other Celtic Revival writers further embedded Róisín in the literary mythology of Irish identity.
To name a daughter Róisín in Ireland carried political resonance well into the twentieth century — a quiet declaration of cultural allegiance during decades when Irish language and identity were contested ground. Today, Róisín Murphy — the Offaly-born singer and electronic music artist — has given the name a thoroughly modern profile, associated with avant-garde artistry and fearless creative reinvention across multiple decades of music. The name is pronounced ROH-sheen, a phonology that surprises most non-Irish speakers and serves as a small initiation into the beautiful illogic of Irish orthography. Outside Ireland, the spelling Roisin (without the fada accent) is more common, but the name retains its cultural specificity wherever it travels.