https://www.findagrave.com/memorial/265707268/susanne_louisa_marie-pr%C3%A9vost#view-photo=317800203

https://www.cathinfo.com/crisis-in-the-church/more-on-leo-xiv/

Unofficial. The Certificate has  "Louise", not Louisa


*************************************************************
Docuмent # M296 2

Fontaine: Suzanne Louise Marie


*******
On this Monday fifth of February, Eighteen Hundred and Ninety Four at eleven o'clock in the morning, Birth (Act)Certificate of a child who was presented to us, and was recognized as of the female sex, born the second day of this month, at One in the night, at her brothers' and mother (4 Paris Street?) legitimate daughter of Ernest Auguste Fontaine, pastrymaker, age thirty seven years, and of Jeanne Eugénie Prévost of no profession, aged twenty-nine years. Married at Doudreville Seine Interior, October twentieth, Eighteen Hundred Eighty Six. Said child received the given names Suzanne Louise Marie. As requested, the presentation was made to us by the brother of the child. In the presence of Emile Corel, watchmaker, forty-two years old, and Hippolyte Bonneville, police agent, thirty-five years old, both residing in Havre. Declared, and the witnesses signed after the reading was completed, and a duplicate Birth (Act) Certificate written in their presence and certified by (them?).Following the law, by Us Deputy Mayor of Havre, fulfilling the functions of Officer, publish (...) of Civil State

*** *** *** *** ***
{Signed}
E. Fontaine, Emile Corel,    Bonneville

Sorry, I meant to ask if Pope Leo's baptism was valid, where the scenario would be that his father , (John?) was questionably baptized... because of the invalid second marriage with Suzanne. But as I said, the new Pope is very probably baptized along the way.  
The Church probably had no clue about Salvatore's first valid marriage in 1886, am I right?  So there is a ripple effect . The saying goes: "The first lie is the easiest to speak..."

..

The Church probably had no clue about Salvatore's first valid marriage in 1886, am I right?  So there is a ripple effect . The saying goes: "The first lie is the easiest to speak..."

CORRECTION:  SALVATORE married twice, but not in 1886...I  got mixed up. Sorry. I am confusing his grandfather and / or father of the Pope. This story is too confusing.  Now we have Louis Marius Prevost.  It might affect Church docuмents when you are "exco" for adultery...that's my point for baptism of the offspring.

Likewise, what would an invalid marriage later in his life have to do with 

"...I am concerned that you have an incorrect concept of what can, and cannot, affect the validity of a sacrament.  And just to be clear, "validity" refers to whether it was an actual sacrament or not, IOW, "did it 'take'?".  That is not to be confused with liciety ("was it lawful according to the canons of the Church?").  Two different things.

Yes, thanks for that point...liciety... 
I was imagining a worst case scenario. My bad! God bless. +

Suppose this is his grandmother or great aunt. So what?
Provost is not a highly unusual surname.
If you randomly Google my full name, you get three physicians, a dentist, a psychotherapist, a college professor of philosophy, a mother of eight children, widow, dead and buried, and another deceased lady who worked for the federal dept. of  justice.  Not one of them is me or in any way related to me that I know of.

On May 13th 2025, a team of researchers from Discordgenealogy.com,a global genealogy community collaborated and successfully broke through the Prevost "brickwall" in Pope Leo XIV’s family tree. The following docuмent outlines their research findings.
https://discordgenealogy.com/research-findings/
The point is that things like this do matter, and we should not shy away from examining the details of Leo's official story, especially when there are many irregularities coming to light.

Not even the validity of his Holy Orders is that important, since he is a Modernist.

We don't have any doubts that he is a Modernist. That's enough.

Remember Montini, Wojtyla? They were real priests and bishops, but they were Modernists.

Unless you are dying and Leo XIV is the only priest around, what difference does it make?