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From Rodovid EN

Lineage	Козловы
Sex	Male
Full name (at birth)	Пётр Козлов

Events

marriage: ♀ Наталья Львовна Толстая (Козлова) [Толстые] b. 1778

Sources

1. ↑ Compilation of the genealogy of russian nobility families (Родословный сборник русских дворянских фамилий). Rummel, Golubtsov. Tome: 2 Page: 505. Voir notice on Wikipédia (ru). -

From grandparents to grandchildren