Posolovaya
Posolovaya is a Russian surname. Surnames in Russia typically originated from patronymics (derived from a father's given name), professions, or nicknames. Without specific historical documentation on the Posolovaya surname, its exact origin is difficult to pinpoint. However, the suffix "-ovaya" often indicates a feminine form of a surname ending in "-ov," which itself is derived from a masculine name or a place. This suggests that "Posolovaya" may have been the maiden name of a woman whose family name was Posolov, or it could be a direct feminine form of a surname related to a personal name or location. Russian surnames commonly have masculine and feminine forms that differ by endings, such as Ivanov and Ivanova. Therefore, Posolovaya likely represents the feminine version of a related masculine surname. Further genealogical research would be required to trace the specific lineage and definitive etymology of this surname.