Little B. Vanderpool was a private in Co A, 1st Regt Miss Light Art. Co A, was Capt Sam Ridley's Battery, aka Jackson Light Art., of Hinds and Madison Co.
As George said, Samuel H. Jordan was in Co B, 24th Miss Cav Btn, which was Hudnall's Indpt Co, from Lawrence Co, and Hargrove's Co (also called Co D) of Claiborne and Copiah Cos.
HTH
Virgil