I am reading about the eyres (how do you pronounce this, as a side question?) which moved around England dispensing justice in 13th century England.

They visited each area around every 7 years to hear criminal cases.

Given the lag between the crime and the court hearing, I have a few questions:

What proportion of criminals were actually caught in the 13th century?

If they were caught, were they imprisoned until the eyre came round 7 years later? If they weren't imprisoned, did they just abscond?

Where were the prisons? Were they in the local castle? How long a sentence would there be for different crimes? Did the convicted have to pay for their living expenses while in prison?

Thank you.

Edit: typo