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From Rodovid EN

Lineage	Вяземские
Sex	Male
Full name (at birth)	Петр Иванович Вяземский
Parents ♂ Иван Васильевич Вяземский [Вяземские]

Events

child birth: ♂ Василий Петрович Вяземский [Вяземские]

From grandparents to grandchildren