His first name appears to be "Christian" if I decipher the handwriting correctly. He does not appear on the Casualty List (at least not in my quick visual scan), but he does appear in WO 100 23 of the Medal Rolls under No. 2 Company 11th Battalion. He was entitled to a medal for the Crimea and a Clasp for the battle of Inkerman issued by the War Office 13 March 1857. His regimental number does not appear on this page, but he was listed as a Collar Maker. I tried looking on about 50 more pages (out of over 600), but figured if this is the person you were looking for, you could take it from here.
If you need it, send me a private e-mail and I will send a couple of JPEG attachments with pictures of the signature.