It is not all about being all knowing, it is about doing the research instead of speculating. And to answer your question. No, I do not think it is a mispelling for Chevis. In the following marriage record, you will see that the spelling of Cheves and Kiese. Two totally different names

Pierre August & Gabrielle Tessier, Parents of Celesis Auguste Mallet (she is listed as Celeste August married 1st August 1826 to John Cheves, Grafe(half White) Lib. (free) of Lafourdche. (Opelousas church Registers of Blacks. Volume 2 Page 59) Parents of John chevers were John Chevers and Rosalie Kiese.

One thing that I have noticed a lot is name chopping. French creoles carried more than one name.

EXAMPLE: Marie Jeanne Nancy Chevis married Louis Honore Gradenigo.

NOTICE: In the census records the name and the ages.

1850 - Honore Gradenigs 60 M
Nancy Gradenigs 51 F

1860 - Honore Gradenige 60
Mary Chavis 53

1870 - Honore Gradings 67
Marie Gradings 56

1880 - Mrs Honori Gra... 75

Now, we all know that ages differ in census records, but notice her name. In 1850, she went by Nancy. In 1860, she went by Mary. In 1870, she went by Marie.

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1850 United States Federal Census
*Honore Gradenigo is living next to Jean Allain

Name: Honore Gradenigs
Age: 60
Estimated birth year: abt 1790
Birth Place: Louisiana
Race: Mulatto
Gender: Male
Home in 1850
(City,County,State): St Landry, Louisiana
Neighbors: View others on page
Household Members: Name Age Sex
Honore Gradenigs 60 M
Nancy Gradenigs 51 F
Delia Gradenigs 25 F
Jeane Gradenigs 19 F
Louis Gradenigs 16 M
Honore Gradenigs 13 M
Augustin Gradenigs 10 M
Joseph Gradenigs 7 M
Kinont Gradenigs 4 M
Benjamin Gradenigs 1 M

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1860 United States Federal Census

Name: Honore Gradenige
Age in 1860: 60
Birth Year: abt 1800
Birthplace: Saint Landry
Home in 1860: Opelousas, St Landry, Louisiana
Race: Mulatto
Gender: Male
Post Office: Grand Coteau
Value of real estate: View image
Household Members: Name Age
Honore Gradenige 60
Mary Chavis 53
Jeanne Gradenige 23
Joseph Gradenige 21
Gurton Gradenige 19
Jean B Gradenige 17
Ortance Gradenige 15
Gaitan Gradenige 13
Louis Porkin 9

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1870 United States Federal Census

Name: Honore Gradings
Estimated Birth Year: abt 1803
Age in 1870: 67
Birthplace: Louisiana
Home in 1870: Ward 4, St Landry, Louisiana
Race: Mulatto
Gender: Male
Value of real estate: View Image
Post Office: Bayou Chicot
Household Members: Name Age
Honore Gradings 67
Marie Gradings 56
Jeanne Gradings 31
Hortense Gradings 23
Caitane Gradings 21
Louis Perkins 18
Victorine Victorian 6