Silva

Silva is also Finnish, Estonian, and Latvian. The name day for Silva in Finland is August 8. The name day for Silva in Estonia is August 8. The name day for Silva in Latvia is October 11.

Also Finnish name. Finnish name day August 8.
https://fi.wikipedia.org/wiki/Silva_(etunimi)
https://almanakka.helsinki.fi/en/name-days/name-day-search.html

Also Estonian: https://et.wikipedia.org/wiki/Silva_(eesnimi)

It's Croatian as well.

It's a Czech name too.

Also a feminine name in Slovenia. [noted -ed]

I've heard Silva as a last name.