Also Romansh. Source: "Vornamen in der Schweiz. Prénoms en Suisse. I nomi in Svizzera. Prenoms in Svizra" (1993) published by the Association of Swiss registrars Https://rm.wikipedia.org/wiki/Peider_Lansel -- his mother's name Https://sursassiala.ch/2015/01/15/familienforschung/ Https://www.portraitarchiv.ch/portrait?page=58 Http://www.annalas.ch/persunas/display/q:Emilia
In 2018, 2 is the most common age for an American (U.S.) Emilia who is registered female with the Social Security Administration. It is the 1, 717th most common female first name for living U.S. citizens.
In Italy Emilia was popular in the second half of the 19th century. It was the 8th most popular name in Rome in 1876, the 10th in 1906. It is not much used today.