Question: Henry Percy's father and grandfather were killed in rebellions against what King of England who was also the Lord of Ireland from 1399-1413?
Sentence (from "Henry Percy, 2nd Earl of Northumberland"): Henry Percy, 2nd Earl of Northumberland (3 February 1393 – 22 May 1455) was an English nobleman and military commander in the lead up to the Wars of the Roses.
Relevant evidence: No