"Samuel Marshfield … m. (1) Springfield 13 [error for 18] February 1651[/2] Hester Wright [Springfield VR 1:20]; …"
Marshfield, Samuell and Hester Wright, 18 : 12m : 1651.[Note: In old-styles dates, the twelfth month is February. For comparison to the modern calendar, it corresponds to the following year. More info may be found here.]