Rhea Royce was an okay minor character on The House of the Dragon. As the technical but estranged wife of Daemon Targaryen.

Who happens to be unofficially exiled by his brother and ordered to reunite with his bride.

She falls off her horse and has a nasty fall.

For which Daemon takes a rock and makes death do they part. Funny enough, in the books apparently he was definitely not even in the same area and was completely innocent of killing her. But he definitely wasn’t crying about it.