Malvina

Also Portuguese:

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https://www.behindthename.com/name/malvina/top/brazil
https://pt.m.wiktionary.org/wiki/Malvina

Also Albanian: https://instatemra.shinyapps.io/emra/

Also Banatswabian: https://ofb.genealogy.net/famreport.php?ofb=zichydorf&ID=I10218&nachname=Szerelmi&modus=&lang=de
https://ofb.genealogy.net/famreport.php?ofb=werschetz&ID=I86776&nachname=Aberle&modus=&lang=de

Also occasionally used in Hungarian: https://hu.wikipedia.org/wiki/Malvina

Also occasionally used in Galician: http://www.ige.eu/igebdt/esq.jsp?idioma=gl&ruta=onomast/nomes.jsp
https://gl.wikipedia.org/wiki/Lista_de_nomes_femininos_en_galego#H

Also used in Romania: https://ro.wikipedia.org/wiki/Malvina_Ur%C8%99ianu

Probably a feminine form of Melvin in many cases.

If the name Malvina was coined by a poet, shouldn't the usage be under "Literature", like Ossian is?

For some bizarre reason, this name is also used in Poland, albeit rarely. Its Polish form is "Malwina" and was quite popular in the early 20th century.

My Danish great grandmother from 1883 was named Malvina.