My brother has a reputation of seeking attention/ making everything about himself and pathologically lies to do so. Ever since my parents passed away he is lonely and doesn’t have real friends or a partner. My wife and I have tried our best to involve him when our son was born. He is the last surviving member of my family and we wanted our son to have a cordial relationship with him as he grows up. My brother genuinely seems to be excited about our son and spends a lot of time trying to bond with him. There is still problematic behavior like trying to compete with me for the affection of my son but we don’t see him often so we ignore it. Any small conversation where we draw boundaries escalates into drama and big fights so we mostly limit the interaction he has with our son. We were throwing a party for our son’s first birthday and had invited close friends and family. My brother asked if he could bring a few extra people. We said a couple of extra people maybe fine but asked him to run it by us. He gave us the names of 4 people we had never heard of. We had a photographer for the event and while we were not thrilled having random people in our photos, we still allowed it. We also had a dress code. The day of the event my brother shows up not following the dress code. His guests start showing up wearing a different dress code. Also around 20 people showed up like that and we had no clue who they were. We learned that my brother had made his own invitation card with his own dress code and had invited 20 people. He also got his own photographer. Then he ignored everyone including my wife, I and my in-laws to the point where it was offensive. He didn’t introduce his guests to us and kept grabbing my infant son without us so he could have a photo shoot with his guests. He was only forced to include me in some shots cause my son started crying without me. He totally ignored my wife and our photographer was competing with his. We asked our photographer to ignore his party and cut them out, but it still led to a lot of drama with him trying to grab my son every 2 minutes. We had previously warned my brother to not make this event about him. After this my wife wants him out of our lives/ have minimal interaction and I agree with her. TLDR: Brother made my son’s birthday party his own by making his own theme, inviting his own guests and photographer while totally ignoring us