The Orlov brothers (
奥洛夫兄弟) helped Catherine the Great seize the throne in 1762 — Grigory Orlov was her favorite. The 189-carat
奥洛夫钻石 (Orlov Diamond), set in Catherine's imperial sceptre, is one of the world's most famous gems. The
夫 ending is the standard Mandarin marker for Russian -ov surnames (compare
罗曼诺夫 Romanov,
普希金诺夫).