Hi Alice, this is all I could find on Hilery and Amanda UPCHURCH. At least you know they only had 3 children in 1880. I'm also inclusing an entry for a Jacob LANIER in Lowndes Cty. There were many LANIERS in Alabama.
Roberta

1880-Lowndes Cty, MS - Zion Page 269B
Hilery UPCHURCH - Blk 31 Born:Ala
Amanda - Wife 27 B:Ala
Lucinda - Dau 3 B:MS
Elvy - Dau 2 B:MS
? - Son 1/Month B:MS

1880-Lowndes Cty, MS - Zion Page 274C
William HARVEY - Blk 45 Born:Ala
Gracie - Wife 35 B:Ala
Jacob LANIER - FathInLaw 85 B:Ala
(I guess we can assume that GRACIE's maiden name was LANIER. Might be Amanda's sister.)