(Roman Numerals in Parens indicate birth order as listed in "The Descendants of Cornet Robert Stetson." 
He passed away in 1829.
A. Of the first child of this family, N.M.S. says her name was Lois and that she married Joshua Stetson (1-1-7-1-2-2) while the Hanover History says her name was Deborah S. Stetson  Both born the same day, are they twins?
B. The Descendants lists a daughter, Joan who married a Mitchell , Family Search has a Joanna Loring, who was born in 1804, and who married Philip Brewster as Joanna L. Mitchell. I have combined them in this profile, pending further sources. rsl
C. I combined Alma and Almy Josselyn into one person. The two similarly named children were missing either Birth or Death records, and the dates seem to work out. Obviously more research is needed to clarify this rsl
↑"Maine Vital Records, 1670-1921," database with images, FamilySearch (17 October 2017), Henry Josselyn Jr. in entry for Alma Josselyn Mann, 03 Feb 1883; citing Leeds, , Maine, United States, Division of Vital Statistics, State Board of Health, Augusta; FHL microfilm
↑"Massachusetts Deaths, 1841-1915," database with images, FamilySearch (22 May 2019), Henry Josselyn in entry for Charlotte Soper, 15 Feb 1865; citing Hanson, Massachusetts, v 184 p 281, State Archives, Boston; FHL microfilm 960,187
↑"Massachusetts Deaths, 1841-1915," database with images, FamilySearch (22 May 2019), Henry Josselyn in entry for Mary A. Josselyn Bowker, Oct 1874; citing Hanson, Mass, v 266 p 303, State Archives, Boston; FHL microfilm 960,205
↑"Massachusetts Marriages, 1841-1915," database with images, FamilySearch (24 May 2018), Henry Josselyn in entry for Philip Brewster and Joanna L. Josselyn Mitchell, 11 Jan 1867; citing Hanson, Hanson, Plymouth, Massachusetts, United States, State Archives, Boston; FHL microfilm 1,433,026