One example could be 'Finnegans Wake' by James Joyce. It's a highly complex and unique work that defies easy understanding and categorization, very much having its own'sovereignty' in the literary world. Another might be 'The Hitchhiker's Guide to the Galaxy' by Douglas Adams, which has a very distinct sense of humor and world - building that is quite different from other science - fiction novels.
Some modern examples could include 'The Handmaid's Tale' by Margaret Atwood. It has its own unique take on a dystopian society, with a powerful female - centered narrative. And 'Cloud Atlas' by David Mitchell, which weaves together multiple storylines across different time periods and genres in a very creative and self - contained way. These novels all have elements that make them'sovereign' in the sense that they offer something distinct and not easily replicated in other works.