My great grand father is Samuel B:1841-D:1879 Bay City, Mi. he was the 5th child of Cyrille and Margurete Gagnon. They lived in Trois Pistoles, Que,
There were ten children. The last was Vital. I do not know if this is the same one you are looking for. I have found the name of Vital was somewhat common. He had a sister Matelda and a brother Maxime. They are buried In Kawkawlyn Mi a near Bay City.
My information came from the Quebec Canada census. Also there is a tree on Ancestry by the name of Marchan-marchand that has many links. The cemetery records confirmed that Mathilda is the daughter of Cyrille and Margurette.
Cyrille parents are Maxime and Francoise Cote. (the have a son Vital also)
Maxime D'Amour is a brother to Samuel. He is on the same 1851 Census of Canada. Maxime died Dec. 27,1928 of phenomena.
Maxime is buried at Kawkawlyn Cemetery in Kawkawlyn Mi. A suburb of Bay City. He is burried with his Sister Mateldia Roucheau and cousin Mathilda D'Amour Dumont.
Time line of Samuel & Mateldia d' Amour
1841 Born in French Canada--Mathilda La Joi was born 1851
Found a Samuel in the 1851 and 1860 Census of Trios Pistols, Quebec, Canada
1864 Mathildia comes to the U.S. according to the 1884 Census of Bay Co.
1867 moved to the U. S. according to the 1884 Census of Bay Co He states he has been in this country for 17 yr. Mateldia states that she has been here 20 yrs.
1870 US Census of Mi. Wennona Post Office, Matilda (wife) he works in a Saw Mill
1871 Cyril - D: 1924
I hope this is of some help.The family were member of St. Joseph's in Bay City. I wrote to St. Mary's in Bay City and a wonderful nun Sr. Rose Dorre researched for me and we met and she took me and my husband around town. What a help! It was not bad for us as we live in Livonia, Mi.