Wow, this title pops up in a few different corners of the internet, and I’ve chased it down a bit—there isn’t a single, universally recognized author for 'Sold to the Night Lord' because that exact title has been used by different creators on different platforms. On places like Wattpad or Archive of Our Own you’ll often find standalone fanworks or indie romances with that name, each credited to the username of the uploader rather than a widely published novelist. If you’re seeing it as a translated webnovel, the original author’s name will usually be listed on the host site (like NovelUpdates, Webnovel, or Royal Road) and that will point to other works in their catalog.
If I had to help you track the right creator, I’d start by checking the platform where you encountered the story: the author’s profile, any linked social media, and translation notes or tags that mention series names. Authors who write in this dark-romance/royalty trope often have other titles in similar veins (side-stories, sequels, or companion pieces), and translators sometimes compile the same author’s works into collections. Personally, I love digging through author notes and comment threads—fans often paste links to related works. For example, if the piece is a Chinese danmei-style webnovel, you might discover the same author also wrote short stories or spin-offs that expand the world, and translators often list those on their blogs. I ended up finding some delightful companion reads that way, and it felt like unearthing a hidden series, which made the whole experience extra cozy.