Background
Thornhill was the eldest son of Thomas Thornhill of Thornhill and his wife Joan née Hussey, daughter of Thomas Hussey of Shapwick.
Thornhill was the eldest son of Thomas Thornhill of Thornhill and his wife Joan née Hussey, daughter of Thomas Hussey of Shapwick.
He was a Member (Member of Parliament) of the Parliament of England for Poole in 1529.