From "The Daniel Dennistons of Beverley Manor and Descendants", by John B. Robb:
MARGARET3 DENNISON was baptized on 19Jan1745/46 at Augusta Stone Church, in
AugustaCoVA by the Rev. John Craig, who noted that her birth was “untimely”. Considering the source, this probably means that Craig had reason to believe that she had been conceived out of wedlock. In a New England Puritan community, this would have been prosecuted as a sex crime, and it certainly raises questions about the circumstances of Daniel’s marriage.
http://www.johnbrobb.com/Content/DennisonReport.pdf