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 (Hotspur)"): Sir Henry Percy KG (20 May 1364 – 21 July 1403), commonly known as Sir Harry Hotspur, or simply Hotspur, was a late-medieval English nobleman.
Relevant evidence: No