This biography was copied in full from Wendy Pitre Roostan's website "The Pitre Trail from Acadia".
"Marc was born c1673 at Port Royal, the fourth child of Jean and Marie.  He is listed in the Port-Royal census of 1686, age 12, living with his parents and 6 siblings. His father died when he was about sixteen but a stepfather fairly quickly appeared. With continuing attacks on Port Royal from New England, perhaps Marc delayed settling down as he did not marry until he was about 26.
Around 1699 he married Jeanne Brun, the eldest child of native Acadians, Sebastien Brun and Huguette Bourg, and who was about three years his junior. In the 1701 census of Port-Royal the newly married couple is listed with their son Claude, age 1. It's certainly possible that they had more than four surviving children, but at this point only the four listed have been traced back to this couple.
They seemed to have settled initially in Port Royal, where two sons were born. Port Royal was again attacked in 1704 so that may have prompted the move south to Cap Sable, as there are no other children of theirs in the Port Royal baptism registers and they next appeared in the 1708 census for Cap Sable. In the 1714 census of Acadia that lay within English control, the couple was listed with two sons and two daughters. This accounts for the four traceable offspring.
According to his declaration at Belle-Ile-en-Mer, their eldest child Claude Marc married at Cobequit in 1724, but it is unknown whether Marc and Jeanne were still alive. Possibly the family moved up to Cobequit in an attempt to escape English-controlled Acadia. The children seemed to have married either in Cobequit or Beaubassin. This would be a path of exile leading eventually to Ile St. Jean for a son and a daughter, and to Miramichi for another son. Their youngest daughter died in Beaubassin at the age of 33. It has been suggested that Marc’s widow Jeanne Brun was a refugee, with their son Jean Marc and his wife Judth Theriot, at Miramichi in 1760." 
Marc passed away after 1714 since he does not appear in any censuses after that year.
↑ 1.01.1 White, Stephen A., Patrice Gallant, and Hector-J Hébert. Dictionnaire généalogique des familles acadiennes. Moncton, N.-B.: Centre d'études acadiennes, Université de Moncton, 1999, Print. p. 1318, 1323.
Marc PITRE 29, Jeanne BOURG (wife); Claude 1; 1 gun, 7 cattle, 4 sheep, 2 hogs.
↑ "Acadian Ancestral Home", hosted by Lucie LeBlanc Consentino; Acadia 1708 Census. Lucie’s note: ”Archives Publiques du Canada. Extrait F.1, 466-1. Copy of part of a manuscript in the possession of Mr. Edward E. Ayer of Chicago.” Note here: Acadian Census microfilm C-2572 of the National Archives of Canada “Acadie Recensements 1671 – 1752”, Image 238 containing only text which says that this census can be found “dans le cartable indiqué Vol 466 Pt. 2”. Note here: 1708 Census MG 18, F 18, 31 pages; Recensement nominatif des Français de Cap-Sable, Port-Razoir et La Have; recensement nominatif des Indiens en Acadie: Port Royal, Cap-Sable, La Have, Les Mines, Cap-Breton, Chignectou, Pentagouet, rivière Saint-Jean et autres lieux. Transcript available on-site, not on microfilm.
BIRTH-MARRIAGE-CHILDREN: Bona Arsenault, HISTOIRE ET GENEALOGIE DES ACADIENS, vols. 1-6; 1630-1775; Quebec, Le Conseil de la Vie Francaise en Amerique, 1965; p. 727 (Port Royal); Univ. of Calif., Berkeley Library, CS31 A77 MAIN. Married around 1700 to Jeanne BRUN. Three children are listed.
This person was created through the import of Holmes.ged on 20 May 2011
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It may be possible to confirm family relationships with Marc 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: