Mother of all xterms?

[Michael ODonnell]

I watch this thread with bemused interest as I use (am deeply
addicted to) CTWM, which was forked from TWM in order to add
"virtual desktops" (now more commonly referred to as workspaces)
and I believe that in this case the C refers to the first name
of the guy who did the work, Claude LeCommandeur.  It's an
obscure little window manager but not an orphan - I contributed
some changes upstream as recently as a couple of months ago.