Your example did not work for me, but after a lot of tinkering, I came up with this example which did:
[author.david]
name = "David Hasselhoff"
bio = "Don't hassle the Hoff."
location = "Baltimore, MD"
thumbnail = "images/avatar.jpg"
[author.pamela]
name = "Pamela Anderson"
bio = "Little known fact, I am vegan"
location = "Canada"
This is different than the menu fix, which looks like this:
[[menu.main]]
name = "Blog"
weight = -120
identifier = "blog"
url = “/”
[[menu.main]]
name = "About"
weight = -110
identifier = "about"
url = "/about"
No, I don’t know why. 
Jack.