My grandmother married her second husband many years before I was born and he is from Martinique, which means he has French citizenship.
To make it clear, my father is the child of my grandmother's first marriage. My grandfather from Martinique came into the family by marriage, we have no blood relationship with him. However, he has been in the family for decades.
I was wondering, can my father and I possibly apply for french citizenships since he is technically my step-grandfather and his step-father?