Question: What historic castle, located on the north bank of the River Thames is famous for imprisoning people such as Clement Walker?
Sentence (from "Clement Walker"): Author of the "History of Independency", which as a project with several editions included also his "Anarchia Anglicana", he was a strong opponent of religious factionalism, and was imprisoned in the Tower of London, where he died without being brought to trial.
Relevant evidence: Yes