This information was found in the Bristol town records, p. 43 of the old marriage listings. I have a photocopy.
It is also listed in James N. Arnold's Index of Vital Records for Bristol (a tan library-bound book).
Children
1. Stephen Barker Chafee, b. 22 Oct 1839, Bristol, Bristol Co., RI d. 15 Sep 1910 (Age 70 years)
2. George Austin Chafee, b. 14 Dec 1840, Bristol, Bristol Co., RI d. 13 Jul 1903 (Age 62 years)
Marriage record in Bristol of George T. B. Chafee and Harriet Newell Austin, 18 March 1839, Bristol, RI.
Detail of marriage record
Notes
From burials at St. Michael's, Bristol, RI: Mrs. Harriet N. Chafee, 29 July 1856.
Her death record at Bristol names her as Harriet N. Austin, and identifies her father as Samuel Austin. Neither her married name nor her mother are mentioned. This is probably a clerk's oversight or due to the confusion of the informant.
Harriet Newell Austin was named after a young American missionary who died in her first year of service, at age 19. She died of consumption at Isle of France, after giving birth prematurely, in 1812. Many girls were named after her.