Costa, A.,Pvt. Co. C. 1st (Nelligan's) La. Infty. En. April 26th, 1861, New Orleans, La. Present on Roll dated June 30th, 1861. Also borne on Rolls of New Co. C. 1st Special Battn. (Rightor's) La. Infty. as Costa, Adolphe, En. April 28th, 1861, New Orleans, La. Roll for July and Aug., 1861, Present, with remarks, Sick at Yorktown. Roll for Feb. 1st to 28th, 1862, Present. On Rolls of Capt. Green's Co. (La. Grd. Batty.) La. Arty. as Pvt., Costa, Adolphe. En. June 1st, 1863, Mobile, Ala. Present on Rolls to Oct., 1863. Roll for Nov. and Dec., 1863, Absent, sick, in Hospl. at Richmond on Surgeon's certificate.  Rolls from Sept., 1864, to Feb., 1865. Present. On Register of the Provost Marshal, District of Henrico, Headquarters at Richmond, Va., with remarks, Age 21. Took Amnesty Oath, April 14th, 1865. Deserted. Occupation merchant. On Official Rolls of Prisoners of War as Coster, A., Pvt. La. Grd. Arty. Paroled at Richmond, Va., April 17th, 1865.