In case you have been waiting for it, here is a genealogy of Lord of the Rings characters, compiled by Emil Johannson. More here at CNN's Geekout Blog.
On law in Tolkien's writings, start with W. H. Stoddard, Law and Institutions in the Shire.
On law in Tolkien's writings, start with W. H. Stoddard, Law and Institutions in the Shire.