Source: Ancestry.com Family Trees (accuracy not guaranteed)
Name: Isaac Newton Flint
Birth: Jan 1853 Bethany, Harrison, Missouri
Death: 20 June 1918 Wichita, Sedgwick, Kansas
Father: John Newton Flint (1824–1891)
Mother: Martha Louisa Hawks (1825–1900)
Spouse: Roxie Jersuha Loomis (1854–1901); Married 1875
Children:
Laura Jane (1876–1954)
Lula Elizabeth (1876–1930)
Janie Louise (1879–1954)
Onward William (1880–1947)
Bertha Belle (1882–1947)
Myrtle Eva (1886–1955)
Claude Loomis (1888–)
Hazel A (1889–1960)
Carrie M (1891–)
Harry Milton (1893–1940)
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1860 United States Federal Census
Home in 1860: Bethany, Harrison, Missouri
Birth Place: Missouri abt 1853
Household Members:
John N Flint 35 and Martha E Flint 32
William Flint 10
George W Flint 8
Isaac N Flint 7
Martha J Flint 5
Sarah T Flint 4
Joseph H Flint 2

1870 United States Federal Census
Home in 1870: Butler, Harrison, Missouri
Household Members:
John N Flint 45 and Martha Flint 45
Wm Flint 21
Geo W Flint 20
Newton Flint 18
Martha J Flint 16
Sarah F Flint 13
Joseph Flint 12
James M Flint 9
Howard E Flint 5
John J Flint 1

Iowa, U.S., Select Marriages Index, 1758-1996
Name: I. N. Flint
Gender: Male
Marriage Date: 2 Aug 1875
Marriage Place: Corning, Adams, IA
Spouse: Roxie Loomis
FHL Film Number: 1035097
Reference ID: 2:3F58PHB

1880 United States Federal Census
Home in 1880: Garden Plain, Sedgwick, Kansas, USA
Father's Name: J. N. Flint b. Missouri
Mother's Name: Rosa Flint b. Illinois
Household Members:
J. N. Flint 28 Self (Head) farmer and Rosa Flint 25 Wife
Laura Flint 4 Daughter
Lula Flint 2 Daughter

Kansas, U.S., State Census Collection, 1855-1925
Residence: Garden Plain, Sedgwick, Kansas
Census Date: 1 Mar 1885
Household Member(s):
T N Flint 33 and B J Flint 30
L Flint 9
L J Flint 7
V D Flint 5
B Flint 3

Kansas, U.S., State Census Collection, 1855-1925
Census Date: 1 Mar 1895
Residence: Garden Plain, Sedgwick, Kansas
Household Members:
I N Flint 42 and R J Flint 40
L M Flint 18
L J Flint 16
O W Flint 14
D B Flint 12
Mydel Flint 10
C L Flint 6
C E Flint 4
H M Flint 2

1900 United States Federal Census
Birth Date: Jan 1852 in Missouri, USA
Home in 1900: Garden Plain, Sedgwick, Kansas
Spouse's Name: Rosie J Flint; Marriage Year:1875; Years Married: 25
Father's Birthplace: Ohio, USA
Mother's Birthplace: Virginia, USA
Can Read and Write: Yes; Can Speak English:Yes
Household Members:
Isaac Newton Flint 48 Head (farmer) and Rosie J Flint 45 Wife
Onward W Flint 20 Son
Bertha Flint 17 Daughter
Myrtle Flint 15 Daughter
Claude Flint 11 Son
Carry Flint 9 Daughter
Henry Flint 7 Son
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The following newspaper articles explain why finding anything about the death of Isaac N. Flint proved difficult. They all have his first name as "James".
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The Wichita Beacon; Wichita, KS; Thursday Evening, June 20, 1918; Page 3, Column 5
FLINT—James [sic] N. Flint, age 66, for 43 years a resident of Sedgwick County, died last night at a local hospital after a long illness. He was a retired farmer, and is survived by four daughters and three sons, none of whom live in Wichita. The body will be taken to Garden Plain tomorrow for funeral and burial. The City Undertaking Company is in charge of arrangements.
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The Kingman Journal; Kingman, KS; Friday, June 21, 1918; Page 1, Column 5
O. W. Flint of south of town and family were called to Wichita yesterday morning on account of the death of his father, I. N. Flint. The elder Flint had been at the St. Francis Hospital for some weeks in a critical condition. The burial will be at Garden Plain, of which town the deceased was a pioneer citizen. The day and hour of the funeral had not been decided yesterday.
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The Wichita Daily Eagle; Wichita KS; Friday Morning, June 21, 1918; Page 2, Column 2
FLINT—James [sic] N. Flint, age 66 years, and for the past 43 years a resident of Sedgwick county died late Wednesday night at a local hospital after a lingering illness. Mr. Flint was a retired farmer. He is survived by four daughters and three sons, all residing near Garden Plain. The body will be taken to Garden Plaine [sic] Friday where funeral services and burial will be held.
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The Wichita Beacon; Wichita, KS; Friday Evening, June 21, 1918; Page 12, Column 5
FLINT—The body of James [sic] N. Flint was taken to Garden Plain this morning for funeral and burial this afternoon. The City Undertaking Company was in charge of arrangements.