I can't help with his time in India, but there are reports of a Patrick KELLY, 28th Regiment of India, slightly injured in 1854 in the Crimea, in a list: "Nominal Return of Non Commissioned Officers and Privates Wounded from the 27th November to 5th December 1854, both days inclusive". I assume the number next to the name in this report is his service number - it's a bit hard to read "1509"?
This report in The Morning Post, Saturday, Dec. 30, 1854