Possible Clues:

• O.K., maybe
• Character to give one's name to
• In it at first at first
• First to authorise
• In the first place, it's inside it
• The first letter is it to start it
• Delete a few notes on Ben Jonson's housekeeper, Jeremy
• It's all at first but at first it's in it
• The first Epistle
• At first the letter is not outside it at first