Riina

Riina is a Finnish and Estonian feminine name that developed as a short form of Katariina, the Nordic rendering of Katherine, itself derived from the Greek name Aikaterine, whose meaning is debated but often associated with the Greek word katharos, meaning pure. The name has been in use across Finland and Estonia for several centuries, carried along by the widespread popularity of the Katherine family of names in northern Europe. Katariina and Kaarina are closely related forms used in the same linguistic region.