A law pupil under Lord Mansfield and the son of a local vicar. He is an abolitionist who shares case details with Dido, leading to his dismissal. He secretly loves Dido, and their relationship ultimately influences Mansfield's final decision regarding her marriage.
Their relationship develops from secret meetings into marriage.
John professes his love for Dido, and she breaks off her engagement to Oliver. The credits state that Dido and John marry.
Mansfield supervises John's legal training.
Lord Mansfield agrees to take the local vicar's son John Davinier into a law pupillage and later resumes it.
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