Frederick, if it was Corporal Daniel Washington McLaurin of Company G 23 Regiment, South Carolina Infantry then he was according to his CMSR's stationed at Sullivan's Island in January and February of 1864 and was a 1st Corporal at this time period. McLaurin Hall at Winthrop Univeristy, in Rock Hill, South Carolina was named after him as he was on the board of trustees at Winthrop. I believe he died in 1928. He had a twin brother named Hugh who was also in Company G of the same regiment. After reading about him he seems to have been an honest and able gentleman. He held serveral important postions in South Carolina after the War. He was wounded three times during the War and was captured in March of 1865 near Bennettsville, South Carolina and released from a Union POW camp in July of 1865. He seems to have had a great deal of integrity and character. In my opinion whatever he said about the Hunley I would take as the truth as he knew it.
Ironically, I cannot find anything about his post War stories about the Hunley. One would think he would have said something before his death in 1928. Corporal McLaurin did have a lot of War stories but nothing about his time in Charleston, SC in Jan. and Feb. of 1864. I doubt if it was Private Donald M. McLaurin of the 23rd Regiment, South Carolina Infantry as he appears to have died in August of 1862.