The post of Guardian was created by LRH in 1966 to deal with areas like Legal and Intel. A large number of support staff were added, forming the "Guardian's Office" or "Guardian Office".
GOWW was based in the back rooms and servants' quarters of the manor house at Saint Hill, and was always short of space.
Despite the space limitations, the GO had a lot of power and for several years until the early 80s were effectively the top dogs, not the SO.
The post was held by Jane Kember until the early 80s, when she got busted. Klaus Buchele held the post for about a year before the GO was disbanded completely by David Miscavige.