Variant of Rosalia, from Latin 'rosa' meaning rose, evoking the annual rose festival.
Rosalea is a lyrical compound blooming from two of the oldest floral traditions in Western naming. Rosa derives from the Latin rosa, itself borrowed from Greek rhodon, referring to the flower that has symbolized love, beauty, secrecy, and divine grace across Mediterranean cultures since antiquity. The Lea element descends from the Hebrew Leah — meaning "weary" or, in some interpretations, "delicate" — carried to prominence as the name of Jacob's first wife in Genesis and subsequently beloved across Jewish, Christian, and Muslim naming traditions.
Together they form a name that is at once botanical and biblical, romantic and ancient. The blended form Rosalee and its variants (Rosalia, Rosaline, Rosalea) were common in Catholic southern Europe, where the Feast of Santa Rosalia — the twelfth-century Sicilian hermit and patron of Palermo — gave the sound ecclesiastical sanction. Rosaline appears in two Shakespeare plays, including as the name of Romeo's first, quickly forgotten love in Romeo and Juliet, and as a witty character in Love's Labour's Lost.
These literary appearances kept the Rose- family of names continuously present in the English imagination. Rosalea, with its four syllables and concluding open vowel, has the feeling of a folksong — it belongs equally to an Appalachian ballad and an Italian garden. It has never been common enough to feel worn, yet it is immediately legible and easy to say. The current fashion for elaborated floral names — Rosalie, Rosalind, Rosalind — positions Rosalea as a distinctive choice that shares the aesthetic mood of its trendier relatives without competing directly with any of them.