Complex sentence: The Queen agreed and the three petitioners were imprisoned in the Fleet Prison, but were soon released having made an abject apology to the Queen and the Lord Deputy, although they did not drop their opposition to the cess.
Split into simpler sentences: The Queen agreed and the three petitioners were imprisoned in the Fleet Prison. They were soon released having made an abject apology to the Queen and the Lord Deputy, although they did not drop their opposition to the cess.