Those born, in the erstwhile territories of "Estado da Índia", i.e., Goa, Damão and Diu, prior to 19/12/1961 can apply to portuguese nationality:

Required Documents:

-Certificate of your birth, issued by Old Portuguese State of India .

-Residence certificate stating where you resided between January 1, 1974 to December 31, 1975 .

-Old documents of  your parents or yours, issued by the Old Portuguese State of India .

-True copy of your I.D.