Sure enough.There he was at page 467,Thomas Pierre Marchildon, born in 1827, the son of Louis Marchildon + Marie-Anne Leduc.
He had several brothers and sisters: 1. Edmond 2. David (1856 - 1882) 3. Edouard (d. 1886) 4. Marie-Anne (1865 - 1867) 5. Marie-Eugénie (b. 1867), m Thomas Bellehumeur 1883, Lafontaine 6. Alfred 7. Louis-Joseph (b. 1874) 8. Philomène, m Edouard Odesse, 1887, Lafontaine 9. Emilie, m Joseph Massier, 1912 in Penetanguishene 10. Joseph 11. André (b. 1879), m Catherine Desaulniers, 1906, Penetanguishene.
Thomas was the son of Louis Marchildon + Marie-Anne Leduc, who married 12 August 1853 in Ste-Anne, Penetanguishene.(I looked in the repertoire of the parish marriages, and it shows the month of the wedding as April)
Louis is the son of Louis Marchildon + Victoire Rheault dit Alexandre, who married in 1802, in St. Francois-Xavier in Batiscan, Qc.
This Louis was the son of Joseph-Charles Marchildon + Madeleine Roy dit Chatellereault, who married in 1767, in Ste-Geneviève in Batiscan, Qc. (This marriage is indexed in Tanguay V: 499 and in LeBoeuf I: 132)
Joseph-Charles was the son of René Marchildon + Marie-Joseph Baribeau, who married in 1740, in Ste-Geneviève of Batiscan. (This marriage is indexed in Tanguay V: 499)
René was the son of Vincent Marchelidon + Jeanne Lamarque, from St-Feré, Paris.
You are going to have a lot of fun fleshing out the details of this family.I recall that Victoire Rheault is directly descended from Charlemagne, through the deBilly family, and Eleanor of Aquitaine (her first marriage).