My feeling on this subject and I have no basis to base this on is that when a king post is present they are called prince posts, and when no king post is present they are called queen posts....
I've just reviewed the glossary of term in Cecil A. Hewett's "English Historic Carpentry" and he doesn't list prince post in the list of posts depicted in the book.
I've just reviewed the book "Timber Buildings in Britain" by R.W. Brunskill and he lists a princess post as a post between the queen post and the eave of a queen post truss....
Maybe it is this reasoning that makes me think a king post has a prince post as a queen post has a princess post.....
