1.
Eol is the only person I know of who
sent his own wife to Mandos.
I really want 3 to point to the name of an Ent, but... it doesn't seem to.
I also can't find anywhere in Treebeard's song about Beleriand which is a lawn... there was at least one dancing-lawn in
Neldoreth, I suppose, but I'm going a bit off-key here.
(Hmm, I wonder if Treebeard was able to pass the Girdle of Melian...?)
8. I mean, there was a
Siege of Pelargir, which fits the description... I guess?
hS