| Sources | [S115]  Ancestry.com and The Church of Jesus Christ of Latter-day Saints, 1880 United States Federal Census, (Name: Ancestry.com Operations Inc; Location: Lehi, UT, USA; Date: 2010;), Year: 1880; Census Place: Plattsburgh, Clinton, New York; Roll: 820; Page: 484B; Enumeration District: 033. 
 
[S128]  Ancestry.com, 1860 US Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), 1860 US Census Louis St Denis.27 Jun 1860
 Name: 	Louis St Dennis
 Age: 	36
 Birth Year: 	abt 1824
 Gender: 	Male
 Birth Place: 	New York
 Home in 1860: 	Plattsburgh, Clinton, New York
 Post Office: 	Plattsburgh
 Dwelling Number: 	424
 Family Number: 	523
 Occupation: 	Day Laborer
 Real Estate Value: 	700
 Household Members:
 Name 	Age
 Louis St Dennis 	36, 1824, day labor
 Emily Dennis 	30, 1830, from Canada
 Louis Dennis 	10, 1850
 Ellen Dennis 	7, 1853
 Mary Dennis 	5, 1855
 Sophia Dennis 	2, 1858
 Emily Dennis 	13, 1947
 
 
[S93]  Ancestry.com, 1870 US Census, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2009;), 1870 US Census Louis St Denis.21 Jun 1870
 Name: 	Louis St Dennis
 Age in 1870: 	48
 Birth Year: 	abt 1822
 Birthplace: 	New York
 Dwelling Number: 	213
 Home in 1870: 	Plattsburgh, Clinton, New York
 Race: 	White
 Gender: 	Male
 Occupation: 	Grocer
 Father of Foreign Birth: 	Y
 Mother of Foreign Birth: 	Y
 Male Citizen over 21: 	Y
 Personal Estate Value: 	100
 Real Estate Value: 	500
 Inferred Spouse: 	Emily St Dennis
 Inferred Children: 	Ellen St Dennis
 Mary St Dennis
 Sophia St Dennis
 Joseph St Dennis
 Antony St Dennis
 James St Dennis
 Thomas St Dennis
 Household Members:
 Name 	Age
 Louis St Dennis 	48, grocer, parents from Canada
 Emily St Dennis 	39, from Canada
 Ellen St Dennis 	17
 Mary St Dennis 	14
 Sophia St Dennis 	12
 Joseph St Dennis 	9
 Antony St Dennis 	6
 James St Dennis 	4
 Thomas St Dennis 	1
 
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