Margareta

Also Czech: https://cs.m.wikipedia.org/wiki/Mark%C3%A9ta - listed as a variant

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://sursassiala.ch/2015/01/15/familienforschung/
https://www.portraitarchiv.ch/portrait?page=305
http://www.annalas.ch/persunas/display/q:Margareta

Also Judeo-Anglo-Norman.
Source: Seror, Simon "Les noms des femmes juives en Angleterre au Moyen Âge".

Also Slovene: https://sl.wikipedia.org/wiki/Margareta

Occassionally used in Poland in the past as an alternative form of Małgorzata. Can be nicknamed to Margaretka. Nameday 13th July.

Also Croatian. [noted -ed]