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"33. Mary (Cornwall), b. (Middletown) Nov. 6, 1679; m. May 30, 1698, Francis Whitmore of Middletown."
"Cornwell, … Mary, d. Jacob & Mary, b. Nov. 2, 1679 [LR1:42]"
The wording of the will gives no indication that she was other than his only wife and mother of his children.