How about flipping through the index backwards from this page and jotting down all the Laplante kids. Then we can look them up and see which belong to George's and Philomène
"Québec, registres paroissiaux catholiques, 1621-1979," database with images, FamilySearch(https://familysearch.org/ark:/61903/3:1:3QS7-L99W-66S2?cc=1321742&wc=9RLK-923%3A13629401%2C13629402%2C17833103 : 16 July 2014), Cap-Saint-Ignace > Saint-Ignace-de-Loyola > Index, baptêmes, mariages, sépultures 1679-1876 Baptêmes, mariages, sépultures 1679-1768 > image 272 of 714; Archives Nationales du Quebec (National Archives of Quebec), Montreal.