Thie is the only Leo/Leon I could find: Idaho Births and Christenings, 1856-1965 for Leo Lafontaine Name: Leo Lafontaine Gender: Male Baptism/Christening Date: 02 Sep 1900 Baptism/Christening Place: Coeur d'Alene, Kootenai, Idaho Birth Date: 20 May 1900 Birthplace: of Coeur d'Alene, Kootenai, Idaho Death Date: Name Note: Race: Father's Name: Joseph Lafontaine Father's Birthplace: Father's Age: Mother's Name: Leovide Gamelin Mother's Birthplace: Mother's Age: Indexing Project (Batch) Number: C00499-3 System Origin: Idaho-EASy Source Film Number: 2021098 Reference Number: pg14 #2
Often, dates and other info are just wrong. In this case, it seems as though his Mother's surname is also wrong. Leovide is a unique first name. I have never seen it before.
In checking further, I found: Marriage:On July 13, 1874 in Saint-Francois-De-SalesTown/District:Gatineau/Communaute-Urbaine-De-L'outaouais-Sud, Qc Joseph Lafontaine Son of [ Charles Lafontaine & Esther Bouchard ] and Lovida DamourDaughter of [ Charles Damour & Emilie Amyot ]
This couple had a son, Joseph, who married in Coeur D'Alene: Idaho, Marriages, 1878-1898; 1903-1942 for Leovide D'Amour Groom's Name: Joseph Lafontaine Groom's Birth Date: Groom's Birthplace: of C. D' A. Groom's Age: Bride's Name: Lauria Legault Bride's Birth Date: Bride's Birthplace: Bride's Age: Marriage Date: 20 Sep 1911 Marriage Place: St. Thomas Church, Coeur D'Alene, Kootenai, Idaho Groom's Father's Name: Joseph Lafontaine Groom's Mother's Name: Leovide D'Amour Bride's Father's Name: Bride's Mother's Name: Groom's Race: Groom's Marital Status: Groom's Previous Wife's Name: Bride's Race: Bride's Marital Status: Bride's Previous Husband's Name: Indexing Project (Batch) Number: M00576-9 System Origin: Idaho-EASy Source Film Number: 2021098 Reference Number: pg14 #7