The marriage record names the bride as Mary Girreard, of John.
Mary Smith is mentioned in several land deeds of South Kingstown and in Newport court records.
On 12 Jan 1722/23 she is "of Prudence Island" when she gives by SK deed a female negro child to a granddaughter, a daughter of Mary's son Ephraim. This deed is witnessed by William Remington & John Peirce.
In Dec 1728 she is identified as "of Prudence Island."
On 23 Aug 1731 she is mentioned as "widow of SK" and mother of Ebenezer of South Kingstown.
I have made an assumption that she died at SK.
According to Newport court records, Mary, Jeremiah, & John Smith had to pay Emmanuel Clark for rental of a farm in SK. In the court notes, Josiah Remington is mentioned as the "Barrar" who will carry 40 shillings payment to Clark. Was he the court courier or a relative? He may have been a lawyer or other court official at this point.