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I do not know, and there is no teaching of the church regarding this specific question, but we can assume from the logic of our faith and from the general teaching about angels that God, from what we know from tradition, and this is certain, gave not only to every one of us a guardian angel as a personal guardian but also to every diocese, to every country, and to every nation a specific guardian angel, a protecting angel. This is very sure in the entire tradition of the church.
From this, I would say that the church appointed and proclaimed specific saints as patrons for particular professional groups or states, like the patron of students, the patron of parish priests, the patron of confessors, the patron of workers, and so on. The popes proclaim such saints. And I think, by analogy, it would be very logical that there are also angelic patrons, let us say for students or for families and family life, for the same categories for which the church already proclaimed saint patrons.
So there could be, and I think there should be, an angelic patron, let us say, of family life. But I think this is for all families, not that there is a specific angel given only for the marriage of one couple. That I do not assume. I think it is more probable that there is an angelic patron for people, for families as such, for family life, or for conjugal life.