Pierre Granger died in his early 40's, but his exact date of death is unknown.  Euphrosine Gautreaux is listed as his widow on the Acadian Wall of Names in Louisiana, so Pierre Granger is likely to have died in Maryland or en route to Louisiana after the Maryland census of July 7, 1763, and before 1769, when a 1769 Louisiana census identified Euphrosine as married to Pierre Landry. 
↑ 1.01.1 Stephen A. White, DICTIONNAIRE GENEALOGIQUE DES FAMILLES ACADIENNES; 1636-1714; Moncton, New Brunswick, Centre d'Etudes Acadiennes, 1999, 2 vols.; p. 764; citing
Diocese of Baton Rouge [LA], CATHOLIC CHURCH RECORDS; 1707-1769; vol. 1, Catholic Diocese of Baton Rouge, 1978; pp. 49 & 58; [contains the 3 registers of the church of St. Charles-aux-Mines, Grand Pré, that were carried into exile by Acadians to St. Gabriel d'Iberville, Louisiana.]
↑ White, pp. 74 & 88 [Text:] "Consanguinity 3rd to 4th degree (SGA-3, 7a)."
↑ Title: Acadian Exiles in the Colonies; Author: Janet Jehn; Publication: Covington, KY: Author, 1977; pp. 132 & 151. [Text:] "Etat des gens Neutrals acadiens qui sont to Snowhill, En Maryland...Pierre Granger, Frausine Granger son epouse, Anne Granger, Marie Granger, Joseph Granger, Jean Baptiste Granger, Pierre Granger, Claude Granger."
It may be possible to confirm family relationships with Pierre by comparing test results with other
carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA test-takers in his direct paternal line.
Mitochondrial DNA test-takers in the direct maternal line: