'Children of Samuel and Mary (Wilton) Marshall, born at Windsor: ... John, ... m. (1) at an unknown date, Abigail Trowbridge, b. at New Haven, Conn., 7 Oct. 1670, d. at Windsor, 29 Feb. 1697/8, daughter of William and Elizabeth (Lamberton) (Sellivant) Trowbridge, by whom he had two children.'
The date of Abigail's death must be incorrect, as 1697/98 was not a leap year.