Many of the headstones are covered in moss, dirt, or overgrowth. You will typically need a Brush or a Knife (found in earlier scenes) to reveal the carvings.
The grave name puzzle in the main game sets the stage for the bonus chapter, which explores the origin of the burial grounds. Troubleshooting Common Issues lost lands 6 grave name
The game doesn't just hand you the name; you have to earn it through a series of item hunts and logic puzzles. Here is the step-by-step breakdown: Many of the headstones are covered in moss,