I had never heard of this attack, but, while researching the Medals of Honor for Cushing's attack in October, I found the names of five naval men who also received Medals of Honor for an earlier attack on the formidable ironclad back in May 25, 1864.
They were Alexander Crawford, Charles H. Baldwin, Benjamin Lloyd, John W. Lloyd (were these two related?), and John Lafferty.
Obviously, this one did not succeed. I'll do some more research on it.
Always Finding Out New Stuff. --Old B-R