Sentences the first draft of my Milton paper actually included

The protagonist, known as the Lady, is a fictional character and not a historical person, but she was written to be played by the Earl of Bridgewater’s daughter, who was of course a historical person.

They have a discussion in which he tries to be clever and she defends herself eloquently despite being glued to her chair.

This sonnet actually possesses some sonnetly and literary qualities, as opposed to his usual prosy sonnets.

This could be because after he got married, writing poems about the beauty of other women could be problematic, and it is almost certainly due to maturation on his part.