hi there

I expect you've seen the information in the FIBIS database (fibis.org):
The Indian Mutiny Medal Roll (British Forces) 1857-1859.Given Names(s) James
Surname Larkin
Rank Troop Sergeant Major
Regiment or Ship 6th Dragoon Guards (Carabineers)
There is also the following - but not sre if this is another man of the same name, as would depend on when your man entered the service?:
Entry from Bombay Soldiers Records 1851-1857 L-ZEntered the Service 1855
Surname Larkin
Forename(s) James
Occupation before Enlisting Groom
Town and County Galway
Where first enlisted Dublin
Date of Attestation 19 October 1855
Term of enlisted service 10 years
In what ship arrived from Europe, or Service Entertained Earl of Windsor
Year of Arrival or When that service entertained 1856
IOR Reference L/MIL/12/114
MarMnkly
