If you click on suggestions on the "my wikitree" menu, you get profiles you manage. But if you click suggestions on the menu with your -- or someone else's -- Wikitree id, you get suggestions related to them, and these profiles may be managed by anyone. So, if you change to your grandfather Hiles' profile and use the suggestions link on the menu with his wikitree id, you will get 8 generations of suggestions related to him, although not all with his last name. I hope this helps