1910 Issaquena Co Ms census
William H CRITTENDEN 42 B M Ms Va Ga
Carry 35 B F Ms Ms Ms
children/step-children

1900 Issaquena Co Ms census
Henry CRITTENDON 33 B M Ga Ga Ga, b. Jan 1867
Carrie 25 B F Ms Ms Ms, b. Sept 1874
children/step-children

Also in 1900 Issaquena Co Ms census
John T CRITTENDON 26 B M Ms Va Ga, b. May 1874
Millie 26 B F Ms Va Ms, b. July 1873
Children
William H (father)60 B M Va Va Va, b. Jan 1840
Manuel (brother) 15 B M Ms Va Ms, b. Nov 1884
Julia (sister) 15 B F Ms Va Ms, b. Nov 1884

I did not find this William H Crittendon (b.1840 Va) or family on the 1880 census, but I did find this in 1870...
1870 Butts Co Ga
Wm H Crittendon 30 B M Va
Mary 23 B F Ga
Martha 6 B F Ga
William H 4 B M Ga
Amanda 2 B F Ga

I did find this for 1880 Chatham Co Ga...
Lewis DORSEY 37 B M Md
Elizabeth 30 B F Ga
....4 children
William CRITTENDEN 12 Mu M GA, nephew, at school
....another nephew

I don't have any documentation to tie any of this together but it may give you something to help your search.

No relation, just had some time.