Statistics for occurrence #1 of “Pembroke, Mass.” in chapter 1 of Medford Historical Society Papers, Volume 22.:

... same builder as was the Gray mansion next west from it, and that early in the nineteenth century. That, however, upon consideration is highly improbable, as Thatcher Magoun (born June 17, 1775, in Pembroke, Mass. ) was but twenty-seven years of age when he came to Medford in 1802 and commenced the business of ship-building. His first residence was near his ship-yard on old Ship street, corner of Park, and it...
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