Wedding Announcement

We've all seen hundreds of them. There are things we like, things we don't like, things we hate, things that surprise or annoy us, but by this stage of life (the stage of all my friends are married), I've pretty much seen it all. That is until the most recent announcement I received. The parents are listed on the bottom left of the announcement. Parents of the bride, two names, followed by parents of the groom, six names. That's right. There are three (full) sets of parents listed for the groom. And I'm having a hard time picturing the kind of circumstances that would warrant this. A mother and a spouse, a father and a spouse, and a former step parent and a spouse? Foster parents? Adoptive parents who each divorced and re-married, and then birthparents who were found somewhere along the way? Was he raised by grandparents, equal time spent with all 4 pairs, only three of which are still living? See what fun it is to hypothesize??? Any other ideas?