Ilaria

Ilaria is the Italian form of Hilaria, the feminine of Hilarius, from the Latin hilaris, meaning cheerful or glad, which is also the source of the English word hilarity. Ilaria del Carretto, the young wife of Paolo Guinigi, lord of Lucca, is remembered through her marble tomb in Lucca Cathedral, carved by the sculptor Jacopo della Quercia and regarded as a masterpiece of early Renaissance sculpture. The masculine Ilario and the English Hilary come from the same root, the latter once used for men after Saint Hilary of Poitiers. The name is used chiefly in Italy.