In Part 6 of "The Secret River" by Kate Grenville, the character William Thornhill dies. However, both Smaasher and Whisker Harry survive.
In Part 6 of "The Secret River" by Kate Grenville, two characters die. However, neither Smasher nor Whisker Harry die in this part. The characters who die in Part 6 are Mrs. Herring, an elderly woman, and Blackwood, another settler in the story.