Sapiel and his wife Mary S were located in the 1870 Maine United States Census. He is 55 and she is 52. Image also under Image Tab,
Sapiel, his wife Mary and their grandson Joseph are listed in the 1880 Census.
Joseph M their son died on 30 Aug 1893 in Old Town, Maine, US.
The Sockalexis family name comes from the Oldtown, Penobscot County area in Maine. The oldest grave (that is known) is that of Francis Sockalexis born 1842 who was the father of the first "First Nations" (Indian) major league ball player, Louis. It may very well be that this family is connected.
↑ "United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6DT-RRC : 12 April 2016), Sapiel Sockalexis, Maine, United States; citing p. 11, family , NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,054.
↑ "Maine Vital Records, 1670-1921," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:KCDP-M2Y : 23 September 2017), Mary Sarah Lola in entry for Joseph M Sockalexis, 30 Aug 1893; citing Old Town, , Maine, United States, Division of Vital Statistics, State Board of Health, Augusta; FHL microfilm.