Matters of Precedence

OK, here's an etiquette issue:

My wedding officiant, Rabbi Bruriah, is of an age I will hazily place as early to mid forties. In attendence at the wedding, hopefully, will be the rabbi of my old synagogue, who is a charming eightysomething Yeky with a cute accent, and his lovely wife, also the darlin' priest from my father's parish, who is in his late fifties.

Given the roughly equal religious ranks of these person, who gets introduced to whom? I assume that, between the men, age indicates the order of precedence, so Father gets introduced to Rabbi Sr., and to his wife, whom I am forbidden to call 'Rebbetzin'.

Between rabbis, and between Rabbi B. and Father, who gets presented to whom? Rabbi Sr. is, after all, a rabbi of great authority, and twice Rabbi B.'s age, but according to Emily Post, a gentleman is ALWAYS presented to a lady, regardless of seniority. However, some sites I've looked at seem to indicate that deference is not based on gender in a business setting. This is my wedding, not a business setting, but they have a collegial relationship.

Is this important? This is not important. But inquiring minds want to know. Is there anything in Gemara about who gets presented to whom when a Catholic priest meets a somewhat younger lady rabbi?