We have just learned from friends that Bill Manning died last night. Bill was a member of the original Unbound design team in 2006, and as such instrumental for the success of Unbound resolver.
From the doc/requirements.txt document that is distributed with the Unbound source code:
The Unbound resolver project started by Bill Manning, David Blacka, and Matt Larson (from the University of California and from Verisign), that created a Java based prototype resolver called Unbound. The basic design decisions of clean modules was executed.
See also the full requirements.txt.
Rod Van Meter wrote a loving memory: