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://www.portraitarchiv.ch/portrait?page=127
Add Usage: Swedish, Norwegian, Danish, German, EnglishPronounced: ya-kaw-BEE-na (Swedish), ya-go-BEH-na (Danish), jak-ə-BEE-nə (English)Feminine form of Iacobus (see JACOB or JAMES) used in several languages.
Source: "Vornamen in der Schweiz. Prénoms en Suisse. I nomi in Svizzera. Prenoms in Svizra" (1993) published by the Association of Swiss registrars
https://www.portraitarchiv.ch/portrait?page=127