N. P. Whisenhurst [sic], Private, Richardson’s Company, Alabama State Reserve, admitted Ross Hospital, Mobile, Ala. September 14, 1864, Febris Intermittent Int.[sp?], deserted hospital September 19, 1864, no further records

Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Alabama
Miscellaneous File Roll 508

The Civil War Soldiers and Sailors database lists 12 men on its roster for this unit. Possibly this unit did not complete its organization, and the men went to other units
https://familysearch.org/wiki/en/Richardson%27s_Company,_Alabama_State_Reserve

Index to Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Alabama Film Number: M374 roll 47