[quote=Maxply;] For my part, I respect other denominations and faiths by following their rules. This fellow doesn’t.
a i) Explain to the family member the concept of “closed communion”;
a ii) Explain to them the concept of “restricted communion”;
a iii) Explain the concept of “open communion”;
a iv_ Explain to them the concept of “unrestricted communion”;
If you need help in how to explain those concepts, ask.
b) Discuss the situation with the priest. Whilst I seriously doubt that there are extenuating circumstances, there is an infinitesimally small possibility of that being the case. Regardless, the Priest should explain to you that specific aspect of Canon law, and how to deal with your family member. Then the Priest can deal appropriately with the family member;
c) Some people just don’t know how to be good guests. There is a thee or four volume set of book (out of print) about how to be the perfect guest at services for denominations other than one’s own. I’d suggest them as a Twelfth Night gift for that family member, but I don’t remember the title.