My wife is black and I am from a white Jewish family. When we announced our marriage, the family was very happy as far as I could tell.
However, my slightly senile Jewish grandmother had one issue. She grew up with white Jews marrying white Jews and having white Jewish children.
One day she confided to my cousin that she was upset. My cousin asked why and she said that, if we had children, she wasn't sure if she would be able to love them.
My cousin immediately said "Don't be silly Nana, of course you will." She may have used even harsher words, knowing my cousin.
My Nana loved my wife very much. When my first daughter was born, we planned a trip from New York to Detroit to see family, including Nana.
Before we left New York, my Nana died. She never met my children. But, I know she would have loved them very much just as she loved and accepted my wife despite the prejudice that she had been shown and taught growing up.