https://jewishencyclopedia.com/articles/8065-ignatiev-ignatyev-ignatieff-count-nikolai-pavlovich
IGNATIEV (IGNATYEV, IGNATIEFF), COUNT NIKOLAI PAVLOVICH - JewishEncyclopedia.com
Complete contents the 1906 Jewish Encyclopedia.
nikolai pavlovichignatievignatyevignatieffcount