DefaultTrust is a user created by theymos, on trust depth 0. The people on trust depth 1 are the people that are on DefaultTrust's (theymos's) trust list. They were added to start the trust network, I believe, or something like that. To get into depth 1, you would have to be on DefaultTrust's trust list.
Theymos has different trust list. DefaultTrust's trust list and theymos's trust list are different. Also, DefaultTrust's trust list and default trust list are different.
DefaultTrust's trust list is trust list of the admin-controlled account 'DefaultTrust'.
Default trust list is the trust list a user have until they change it. A default trust list consists of people in DefaultTrust's trust list, the people trusted by them and the user itself.
