I found this....
1850 Catahoula Parish, Louisiana Census
Vanhart Fisher age 40 Germany
Phineas Fisher 14
Moore D. Fisher 6
Margaret Fisher died April, 1850 from fever in Catahoula Parish, Louisiana born about 1815, in Mississippi. Ref: Deaths, in [1850-1880] Ancestry.com
Also, in 1850, Catahoula Parish there is Mary Fisher 65, with Adam Fisher age 31. I don't know if there is a relation, or not.
Vanhart Fisher and Caroline Hunt married 8 June, 1852, in Catahoula Parish, Louisiana. She apparently died before 1860.
1860 Census Catahoula Parish, Louisiana Black River
V. Fisher 54 planter $1200/200 Germany
Vanhart Fisher and Mary Paris married 23 October, 1856 Catahoula Parish, Louisiana
1870 Catahoula Parish Census
Vanhart Fisher 66 $100/250 born Ulster [Germany]
Francis [female] 9/12 born Sept.
William Harper 15
Mary Richy 3
Arsella Paris 14
I found Caroline Hunt in 1850, Catahoula age 35 $400
Salina Hunt 13
William Hunt 9
A. C. Fisher and E. Fisher married 28 March, 1866 in Concordia Parish.
G. M. Fisher and Octavia Brewer married 20 May, 1896 Catahoula.
Bowman Fisher and Sarah Briggs married 23 February, 1881 Catahoula.
Some of these may not relate, but thought I'd include them.
William Day Fisher son of George M and Sarah married my aunt Sarah Elizabeth Smith.
I am also related, by marriage to Sarah Ann Fisher, daughter of Major K Fisher, son of George M. Fisher. She married 1) Marion McNeely 2)my uncle, on my mother's side.
I hope that some of this is a help.