Dear,
I wish to state that i am a pondicherrian(french colony-inde).My grandfather born in pondicherry in 1907(french colony)and my father born in pondicherry in 1937 (french colony).I was born in 1969 in pondicherry.please inform me whether i am eligible for french nationality.I have the birth certificate for all.

You do not say your mother birth, if your mother birth was indian and marriage conducted before 1962, the marriage certificate duly registered in pondicherry municipality. If yes means hundred percent you will be get.