Louisa Brackett was a sister of Millerite visionary Hazen Little Foss. Louisa's brother Samuel Hoyt Foss was married to Ellen White's sister Mary Plummer (née Harmon) Foss. On several journeys in 1845 Louisa accompanied Ellen, who later recollected, “My constant and faithful companion at this time was Louisa Foss, a sister of Samuel Foss, the husband of my sister Mary.” Louisa married Benjamin Brackett, a cooper from New Gloucester, Maine, in 1852. She died in 1861 shortly after the birth of her third child. No evidence has been found that Louisa Foss became a Sabbathkeeper. Neither she nor her husband is mentioned in the Review. 1EGWLM 797.4
See: George Thomas Little, The Descendants of George Little, who came to Newbury, Massachusetts, in 1640 (Auburn, Maine: the author, 1882), pp. 290, 291; Herbert I. Brackett, Brackett Genealogy: Descendants of Anthony Brackett of Portsmouth and Captain Richard Brackett of Braintree. With Biographies of Immigrant Fathers, Their Sons, and Others of Their Posterity (Washington, D.C.: [author], 1907), p. 207; Ellen G. White, Life Sketches, p. 77. 1EGWLM 798.1