Her family was ennobled if I recall correctly...but what happened to
them..are any alive today ? Thanks -wayne
Yes. There was at least one brother, and if I am not mistaken, sisters as well. There are some websites that have the story of her family, house and home town.
There was also at least one documentary of the town where the family lived, and it is YouTube, but finding it might not be easy. If I am remember correctly when they were ennobled, it was specified that it would be inheritable from female as well as male lines, but the original papers were destroyed in fires and what has survived is copies that may or may not be correct.
However, to be able to trace back that far may be difficult, not knowing exactly which line to follow, and on top of that, several parish records from Lorraine were lost in the various wars including WWII, WWI and the Thirty Years War.
The best places to find recent French records might be in Geneanet, and also in Family Search. The Mormons were able to copy and index some parish books, but at least for the ones I was researching I couldn't get past 1648 because the earlier books were destroyed when the church and the town were burnt during one of the wars.
Also, there should be some records about the marriage and they will probably give the names of the bride's parents. I would think that there might be also some naturalization papers giving more information.
I would suggest also looking at the book mentioned in the website about the the famille d'Arc or d'Arc du Lys.
There is a book that studies that family for several generations and it may be available at Gallica since it was published in 1878.