Richard, am travelling and don't have access to the docs at the moment.But there's far more to this.
The descendents, not being a single cohesive group, did not file a class-action-type lawsuit.They created a corporation, which descendents had to buy stock in, and the qualified "stockholders" filed their trees back to Urbain to show that they were legitimate heirs.Then the Corporation Tessier-Lavigne filed suit against a number of entities, including the Bank of Montreal and Order of St. Sulpice.
The suit was filed in Quebec and attempts to appeal to the World Court, the Vatican, British monarch and a slew of other entities were non-starters because the whole case was bogus and everyone either refused to hear or subtantiate their appeals.As noted in another message, the World Court did refuse to hear the case.The caption of the case is much more extensive than we've condensed it to here, but the end result is the same.
To the best of my knowledge, there is no direct line of Urbain which ever changed its name to Tessier-dit-Laplante.In fact, as Jerry Lesperance has noted many times, there were at least seven separate families surnamed Tessier which landed in Canada.Tessier-Lavigne was a separate line from Tessier-Laplante, and if there was intermarriage, is was incidental and there is no established line of Urbain that I'm aware of which is using that name.
As to anyone having a single record on the family, the only set I'm aware of is that which was archived after the initial court case and it was never digitized.
This all leads to the reason that we're trying to find the current keepers of the pre-trial records.Just because the "genealogist" (and I use the term loosely) certified them on behalf of the Corporation Tessier-Lavigne doesn't mean they are complete.In fact, I found discrepancies between those filed on behalf of brothers and sisters...giving them different grandparents or great-grandparents, or tracing back to completely different children of Urbain and Marie.So we want to find the unadulterated primary documents that were created by our ancestors and not just those that were filed in court.
Some people on this forum reported being contacted as recently as the 1970s to purchase additional stock or other monetary contributions to pursue the claim.Combined with articles found on Lexis-Nexis a few years ago, we know that someone is still after this, but don't know who they are.Who knows, maybe they don't want to be found.But we're still trying.