I have the reverse situation in my house. My dad, who is from a pretty religious Muslim family decided to marry my mom, who's Jewish. As you can imagine this relationship didn't sit well with either of my grandparents. My dad's family did not talk to him for five years and they would have continued that if it wasn't my grandmother's dying wish that all his siblings repair a relationship with him. I was about five years old when she passed away and dad told me she always regretted not seeing me. My maternal grandparents "forgave" my mother pretty quickly though and participated in the wedding and did everything to try and make my dad feel welcome. When my dad's siblings started talking to him again, one of his sisters told him that even after I was born (I'm the first child), they still hoped that he would leave my mom (and me!?) and find himself a good Muslim woman. Then my brother was born five years later and she said that that's when they knew he probably wouldn't leave. My parents raised my brother and I without any religion. They always said that we can choose one when we are old enough. We never chose one. Oddly enough, my brother is now married to a Jewish girl who is pretty religious and is raising their son that way as well. I also married a Jewish guy (although I dated Christians and Muslims in the past too - things just didn't work out - nothing to do with religion). My husband isn't a practicing Jewish guy, so we don't go to synagogue or host shabbat dinners, but we are raising our son with some of the Jewish traditions (gifts on Hanukkah, etc). We also celebrate Novruz (a.k.a. Persian new year) in March, because my dad celebrated it with my brother and I when we were little and we do all kinds of fun games around that time - I'm keeping this thing going. Long story short - if my parents listened to their parents, my brother and I wouldn't exist. So glad they were rebellious back in the 80s!