Your situation is really hard because what you are dealing with is spiritual differences. But if you really love each other, you will go through against all odds to stand up for your love.
Dont give up in trying to get your family be acquainted with the boy you love. Be persistent and strong in saying that he is a good man and he is the person that makes you happy. Also let the boy prove himself to your family that he is worthy of your love. In time, your family's hearts will soften because they will see how much the boy really loves you.
Good luck and hope I had helped.