His younger brother William Parnell-Hayes was the grandfather of Charles Stewart Parnell.

Entity and relation annotations:
id: 0
type: entity
value: text: William Parnell-Hayes
labels: <Person>
id: 1
type: entity
value: text: Charles Stewart Parnell
labels: <Person>
type: relation
to_id: 1
labels: Person:family:Person
from_id: 0