Records of Roman Catholics (Baptisms, Marriages and Burials) in the East India Company are on open access in the Asia, Pacific, and Africa Reading Room at the British Library in St Pancras. Details of how to obtain access are given here.
- Bengal Roman Catholic Returns IOR/N/1/RC/1-5 : 1842-1856
- Bombay Roman Catholic Returns IOR/N/3/RC/1-5 : 1842-1854
- Madras Roman Catholic Returns IOR/N/2/RC/1-8 : 1835-1854
For more details and other useful records go to the Search our Catalogue Archives and Manuscripts page and enter Catholic Returns in the search box.
The India Office – Family History Search page has details of the records held – these are not specifically about Roman Catholics, but may help anyone researching their Indian ancestors.
The BBC also has a very useful site on researching your Indian Family History.