All these men were cousins, lived in the Beaubassin area and were born around the same time. They all have nicknames. Two of them married women with surname Cyr. There continues to be confusion with their children, parents and spouses. Girouard-4019 07:27, 26 April 2017 (EDT)
Pierre Cormier-2 dit Rossignol Cormier; married Marie Anne Cyr
Pierre Cormier-735 dit de la Cote; married Marguerite Cyr
Pierre Cormier-77 dit Palette Cormier; married Cecile Thibodeau
Pierre Cormier-1666 dit le Grand; married Anne Marie Pitre & Jeanne Thibodeau
Pierre Cormier; b. ca 1700 married Marie Cyr (unsourced)
Pierre dit Rossignol Cormier, son of François Cormier and Marguerite LeBlanc, was born about 1695 in Beaubassin, Acadia. He was the third child in a family of 14 children. Pierre was listed at the age of 3 in the 1698 census at Beaubassin. He appeared again in a census in 1700 at the age of 5. Pierre was counted again in the 1714 census. He was the eldest of 7 children living in the family home. 
Note: the number of children and their names varies from one source to another. Some of the children apparently didn't have children of their own and aren't mentioned. Also, the birth ages are estimates so the birth order varies also. Use this list for your own research but do not accept it as factual. Post anything you find here please:
Madeleine b: 30 Dec 1719 in Beaubassin, Acadia c: 30 Dec 1719 in Beaubassin, Acadia, m. Paul Bourgeois
Marie b: Abt 1720-1757; m. Charles dit Marin Gaudet
Pierre 1722- ; m. Elisabeth Chiasson b. 1738; ch. Nicolas, Rosalie
Rosalie 1736 - 1796, m. Claude-Vital Barolet, 1730-1756 (1) and Pierre Rouillard dit St-Cyr (2). The most telling refutation is that the Jean CORMIER born 20 Nov 1732 in Pierre Francois & Anne SYRE's family would not leave possible the birth on 2 Sep 1732 of Francoise CORMIER, listed as daughter of Pierre & Marie SIRE. I did not check the other children in detail, but the notes should show the dates.
↑ Title: Acadian Church Records, vol. II; Author: Milton P. and Norma Gaudet Rieder; Publication: Metairie, LA: Authors, 1976; Note: Covers year 1712-1748. Also available as microfiche #6087649. Includes transcripts of Beaubassin, Acadia church registers, now at the Archives of the Mayor of La Rochelle, Charente Maritime, France. p. 21
↑ 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) p. 402
↑ Email message from Karen Theriot Reader-22 responding to a question about Rosalie's parents. I am leaving the parents blank, although Tim Hebert makes a good educated guess. But I find that the list of children for that other set of parents leaves little room for the children I have listed, including Rosalie.Pierre Cormier
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: