It was the family of Natalia Naryshkina, Peter the Great's mother.

Entity and relation annotations:
id: 0
type: entity
value: text: Natalia Naryshkina
labels: <Person>
id: 1
type: entity
value: text:  Peter
labels: <Person>
id: 2
type: entity
value: text: the Great
labels: <Title>
type: relation
to_id: 2
labels: Person:holds_title:Title
from_id: 1
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0