[MEG33]

As the bridegroom isn't named ,one of Jesus's brothers could be the bridegroom.

[StupidQuestions]

Yes. One of his brothers could well have been the bridegroom. That wedding does appear to have been in the family. Jesus' mother traveled some distance to get there and the Bible says Jesus' disciples were there as well. Generally, when you are invited to a wedding you don't bring all your friends --- unless the wedding is in the family.