Statistics for occurrence #1 of “Mr. John Willis” in chapter 1 of Medford Historical Society Papers, Volume 1.:

...r 30, the same year, the town voted to have a school kept in the house of Thomas Willis, the ensuing winter, and a committee of three men, consisting of Engn Jno. Bradshaw, Capt. Ebenezer Brooks, and Mr. John Willis , was chosen to agree with some suitable person to keep a writing and reading school in town three or four months the ensuing winter, and to make return of their doings to the town at the next town me...
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