I agree with Ruth on this one. You came to us moths ago with the same issue which has yet to be resolved. Once you get married, things will only get worse.
Once you have children you will have to decide which church to baptize them and so forth.
Seems to me that each of you are not only thinking about what you want to do but allowing outside sources of family to weigh heavily on your decisions. When it comes to marriage a man leaves his family and a woman leaves her home and the two become one....meaning that they are a new family who must put one another first. I think that this is a common belief of both Catholics & Baptists.
Personally, I think it is the parent who practices their faith more who should make the determination of which religion the children should be brought up in. Who attends church more frequently and holds it as more of a priority in their lives???
I also agree with Ruth that counseling is necessary....no one should go into marriage without resolving this issue, things will only get worse until you come to some sort of agreement/compromise on this. Once children enter the picture, unless you are united on aspects of religious upbringing, there will only be more stress placed upon the marriage.
Most importantly, it would not be the practice of any religious belief to be divided in marriage upon entering it....a marriage is a union and you must enter it with love & respect or one another's beliefs and values. That is what is most important and without entering with that premise, then the union will be weak to begin with.
I wish you & your fiance the best in getting through this hurdle in your relationship. Sometimes it takes a neutral party to put it in a better perspective, sometimes it involves walking away when there is no compromise. But it would be an injustice to not fully address your concerns before entering into marriage. There is too much on the line here to do otherwise. My best wishes ~ Goody