I'm a single father (34M), raising my daughter (16F) by myself ever since her mother walked out on the both of us when my daughter was still a toddler (tdlr: the mother didn't want to be a mother, and she hasn't played a part in either of our lives in 15 years.).

To say that I'm not particular close to my family would be an understatement. But I still attend family events, so that my daughter can see other family members, as it's pretty much just the both of us.
So que the subject of the story..... A few days ago we attended the family easter lunch, which had both immediate and extended family members in attendance, including my uncle (60sM). I wasn't too thrilled when I heard that he was attending, because of his outdated opinions (he's a Nigel Farage supporter, lover of Brexit etc)...

To my relief, the lunch was pretty uneventful and I was looking forward to leaving. But, then, alas, the uncle opened his mouth.
My daughter is openly lesbian and she came out to me a few years ago, and more recently to the immediate members of the family. She was looking rather uncomfortable as he was talking to her about how beautiful she has become and that she will one day make a boy very lucky, etc etc.
I told him to knock it off, as I know my daughter, and I could see the impact that his comments were having on her.
Eventually, though, she had enough and blurted out to him that she's a lesbian and is already in a relationship with her girlfriend.
It took him a few moments to process what she just said, and his next choose of words is what boiled my blood and made me see the red mist.
In a tone of disbelief, he said to my daughter that he doesn't believe that, as she doesn't look like a lesbian (he thinks that all lesbians are butch) and that she's wasting her beauty.
By this point I finally had enough and I threatened him, by telling him that if said one more word to my daughter about her sexuality, that I wouldn't have any issues about knocking his teeth down his throat.
As expected, the mood in the room quickly shifted and I was asked to leave, as the rest of the family didn't tolerate my threats of violence.

I prefer not to use violence or threats. And I've always done my best to be cordial with family. However, he decided to insult and belittle the most important person in my life.
I don't have regrets about standing up for my daughter. And she is certainly grateful that I stood up for her. Because we've always had a very close bond, and she has previously said that she's been able to find the strength to be herself, because she has my love and support.
Though perhaps I could've handled it a lot better than I did..... But I am wondering how others would've handled it? Would you of handled things different after hearing a family member insulting your child?

This has been on my mind the last few days, and tbh I'm not fussed about attending any further family events. Though I know that not doing so could have an impact on my daughter's access to the rest of the family.