Ребёнок Веры Кубековой: Пётр Замятин или мать Людмилы Петровны (не установлено)
wife's great-grandfather or great-grandmother (link)
Connecting link: according to Elena ( S143 ), Vera Alexandrovna is Lyudmila Petrovna’s grandmother. Her child is either Lyudmila's father Pyotr Zamyatin ( I223 ) or Lyudmila's mother ( I224 ). Until this is clarified, the Kubekov branch is shown separately from the Zamyatin line.