Not any that were mentioned

The half breeding was discouraged during those times and Ministry had put many rules regarding it, so therefore there weren't any half breeds

Any reason why?

I'd really like to know the reason for laws like that.

^ Everybody knows ministry hates Non Wizarding kind until after the second war...And I am damn sure they would have implemented these laws(with people like Umbridge) to harass these creatures...So ig this is the reason they would have created this laws

Now I’m wondering if there were any half-breeds who worked in the ministry

^^Bloody good Reason to change them now.

^ you bet there aren't. It's a bit like LGBTIQ* - no lobby no support.