Did children get sent to prison in the middle ages?

Answer 1

In the Middle Ages, there were very few prisons, and those that existed were used mostly to hold people waiting for trial or political prisoners. In fact there were so few prisons that some English counties had none at all.
Occasionally, children were imprisoned, usually for political reasons. For example, the English King Edward V, who was twelve years old, was imprisoned in the Tower of London along with his brother, Richard, by their uncle. The original excuse for this was that they were put there for their own protection, but as soon as the uncle consolidated his power, he made himself king after he apparently had both of the children murdered. This king, Richard III, did not last long, and was himself soon killed in a battle.