Thanks for the reply! Yes it is the same Robert, but I am unsure if he really was born in Scotland. I have Robert's military records, which show him being from Kilcullen, Kildare, and enrolling in the Dublin Military in 1855, thereafter moving to the East Indian Company in 1856 and finally to the Royal Artillery in 1860 (I think). The links for the Scottish Robert Crawford show him in Scotland in the 1860's, long after he was in India.
I also searched the Valuation for Dublin, thinking perhaps he might be there, but no luck. If he was in the military, would he not appear in Griffiths? Any other suggestions as to where i should look?