Olenius

Olenius is a surname of Finnish origin. It is derived from the given name Olavi, which itself is a Finnish form of the Old Norse name Óláfr, meaning "ancestor's descendant." The suffix "-nen" is a common Finnish patronymic ending, indicating "son of" or "descendant of." Therefore, Olenius essentially means "descendant of Olavi."

The surname Olenius is most commonly found in Finland, particularly in the western and northern parts of the country. While not as widespread as some other Finnish surnames, it is a recognized family name. There are no widely known prominent historical figures or events directly associated with the surname Olenius that would constitute a major entry in a general encyclopedia. Individuals with this surname have contributed to various fields in Finland and elsewhere, as is typical for any population group. Genealogists and historical researchers may encounter the surname in local records, church archives, and census data from Finland. Its etymology provides a clear link to Finnish naming traditions and the historical prevalence of the given name Olavi.