This name is beautiful. Florence Nightingale had a girl cousin called Hilary (named at a time when Hilary was very much a male name) and I speculate that her parents, who I believe lived in Italy like Florence's, got the idea from Ilaria.There's a rare English name similar to Ilaria - Elaria - and here's what I've just contributed re Elaria as a "reader-submitted name":An English medieval form of Eulalia. It was caused by a confusion of the second L with R in local speech, and this also resulted in Hilaria in medieval records, as distinct from the male name Hilary. The cult of St Eulalia spread from Spain and France to the English West Country, where, like Ellery (a corruption of Eulalie)for girls, this name, Elaria, seems to have been used the most. It has been used occasionally in England up until the present day, a search of genealogical sources suggests.
There's a rare English name similar to Ilaria - Elaria - and here's what I've just contributed re Elaria as a "reader-submitted name":
An English medieval form of Eulalia. It was caused by a confusion of the second L with R in local speech, and this also resulted in Hilaria in medieval records, as distinct from the male name Hilary. The cult of St Eulalia spread from Spain and France to the English West Country, where, like Ellery (a corruption of Eulalie)for girls, this name, Elaria, seems to have been used the most. It has been used occasionally in England up until the present day, a search of genealogical sources suggests.