Raudkivi
Raudkivi is an Estonian surname. It translates literally to "iron stone" or "iron rock" in English, derived from the Estonian words "raud" (iron) and "kivi" (stone/rock). Surnames relating to occupations, natural features, or objects were common in the process of establishing family names. Raudkivi falls into this category, potentially indicating an ancestor who worked with iron ore or resided near a prominent iron-rich rock formation. The name itself may have originated from a descriptive nickname that later became a formalized surname.