My great-grandmother passed away on October 15, 1945. Since then, my great-grandfather, grandfather, grandmother, and father have also passed away. How can I get a legal document confirming that I am the rightful heir to my great-grandmother’s property?

You’ll need to obtain a Succession Certificate from a competent court in India. This legal document confirms your inheritance rights based on the laws of intestacy, as your great-grandmother likely died without a will. You will need to provide evidence of your lineage and the deaths of your ancestors.