I think I've finally cracked this case.
Jean & Alexandre are witness at their sister Marie's marriage in 1802 in Carleton, where she calls her parents Haleonor MacIntyre & Marguerite McKenzie... Jean son of Jean, in 1813, is «cousin» to Sophie Laviolette dau. of Marie McIntyre as he acts as godfather.
Eleonard McKenter dies in Charlo (Rivière-à-l'Anguille) in 1815 under that spelling. Correct me if I am wrong, but there is no other mention of Edward & Bridget outside Jean-Baptiste's mariage.
Is Jean really a brother of Alexandre & Marie?
I believe Edward & Bridget are fictious first names initially given by Jean Baptiste, before his parents joins him and his sister Christine them in the Baie-des-Chaleurs under his chosen alias Eleonard.
I was dilligently noting all the McIntyre in the Baie-des-Chaleurs when I came accross Joseph Drapeau & Christine McIntyre, who caught my attention. They appear in Carleton already married. Where are they from? A little digging found them deep into Quebec, at Sainte-Marie-de-Beauce in 1795 where they married. Christine's Parents are named here: NOËL (signs NEIL) MacINTYRE & MARGUERITE McKENZIE.
Neil MacIntyre, along with his cousins Roderick(Rory/Rodrigue) & Angus(Ignace) MacIntyre, and a John McIntyre arrived as heads of families in Charlottetown on the brig Alexander in 1772, to settle on Lot 36 in PEI, with other settlers, mainly catholic refugees from mainland Scotland led by Glenaladale.
http://www.islandregister.com/alexandr.htmlBy September, the Barra People (incliding our McIntyres) sign an Oligation permitting them to quit the land they were leased. But only against specific set payments. Unlikely capable to make the payments, they are probably to work for the creditor (indenture) long enough to pay their debts, which in this case would include a few year's rent and board and passage etc. etc. However, they quickly reappear - much too quickly IMO to have repaid their debt - in central Quebec and melt in as quickly into the French catholic population, instead of in cities like Quebec or Montreal or other Scottish settlements as most new immigrants did then.
Less than 2 years later, Angus has a son born in Quebec City (Rodrigue born Sept 1 1774), Jacques McIntyre s/o Neil is born in Nov. 1775 in Montmagny, and Roderick dies in Berthier-en-Bas en 1776 (Neil is said to be the cousin of the Roderick widow Mary MacNeil when she remaries to Daniel Kennedy in 1778 - likely stead of Rory.
What remained to be demonstrated, is that Neil leaves la Beauce sometime after 1798 (Catherine's m to Antoine Marcoux) but before 1802 (Marie's m to Joseph Jahan-Laviolette in Carleton), for Neil to be the same person as Eleonard who appeared in the Baie-des-Chaleurs at the same times (no Neil is otherwise recorded in the Baie during this period).
Neil's son Honoré, born in St-François-de-la-Rivière-du-Sud near Montmagny in 1779, is married in 1803 in St-Hyacinthe near Montreal. He calls his parents Noël McIntyre & Marguerite McDonel (sic) «ses père et mère, de la Baie des Chaleurs»!! So Neil McIntyre & Marguerite McKenzie did indeed leave la Beauce in this period for the Baie-des-Chaleurs, but only under an alias, Eleonard.
When Jean settled out there previously, his father hadn't yet adopted the alias, so it would appear that Jean simple invented new first names for his parents. Likely according to his father's wishes.
It would appear that the McIntyre cousins left PEI in circa 1773-1774 for Quebec before all their debts we settled with their creditor, and Neil must have been afraid that his name might resonate in some of his creditors heirs' ears... Once reassured, with two offsprings settled in the Baie, that the McIntyre name didn't attract attention, he decided to join them there for their old days, after some 25 years in Central Quebec.
So Marie (later Marie-Anne) m Joseph Laviolette must be the same girl as the Marie-Julie born on Feb. 4, 1781 (given her declared age, and the absence of a death for a Marie or Julie before 1800). Alexandre, witness as brother to Marie's marriage in 1802 & at his father's burial, is born Jan. 4, 1784. The only birth missing from this couple, including Catherine & Christine, and I propose Jean-Baptiste in 1766, were born in Barra. Geneviève is born abt 1772 so either in PEI, Barra or on the Alexander.
http://savart.info/migrations/Migration/mcintyre.html