Hi Elizabeth.FYI, it really helps to answer your question if youprovide DATES of birth in Census records.See below.
1851 Census of Canada East, Canada West, New Brunswick, and Nova Scotia about Paul Benoit Name: Paul Benoit Gender: Male Age: 29 Estimated Birth Year: abt 1823 Birthplace: Canada Born of Canadian Parents: Yes Province: Canada East (Quebec) District: Rouville County District Number: 25 Sub-District: St Mathias Sub-District Number: 340 Household Members: Name Age 20 Benoit, Charles59 Mb. 1793 21 Desroches, Josephte57 Fb. 1795 22 Benoit, Paul 29 Mb. 1823 23 Benoit, Damase 23 Mb. 1829 24 Benoit, Solime 20 Mb. 1832 25 Benoit, Samuel 13 Mb. 1839 26 Benoit, Athalie 18 Fb. 1834
Now I can look for baptismal records to verify this family.Here are baptisms for some of the children from the Quebec, Vital and Church Records (Drouin Collection), 1621-1967 :
Damase Benoit, b. 1 Apr, bap 1 Apr 1829 St-Mathias, son of Charles Benoit & Josephte Desroches
Joseph Solime Benoit, b. 9 Dec, bap 19 Dec 1831 St-Mathias, son of Charles Benoit & Josephte Desrochers
Marie Athalie Benoit, b. 29 Jan, bap 29 Jan 1834 St-Mathias, daughter of Charles Benoit & Josephte Deroches
So, this looks like the correct family in the Census.Census takers messed up birth dates all the time, especially with the parents.Hope this helps.Annie