AuthorityControl
iTyoe=Information
Reference to WikiPedia:AuthorityControl.
There may be san advantage to creating a separate shared DataGraph. I as ambivalent about this, but suggest it since it might be less work to "fork off" sooner as opposed to later.
A fork can, of course, be be Cross-Linked as a related DataGraph (making it almost indistinguishable for being one large single thing).
^