On the same question for a different book ... .
I'm a good deal of the way through the sequel to _Salamander_. My
working title is _Eirick_, the name of one of the central characters.
But the book doesn't really have a single protagonist--Eirick is central
only at the beginning, although important throughout. And there is some
risk that calling it _Eirick_ will make people assume it is the sequel
to _Harald_, my first novel, although it did badly enough that that may
not be a major problem.
At the moment, I have two other ideas for titles:
Brothers
and
Pawns
The main basis for the first is the relation between Eirick and Kir, his
cousin and blood brother, which is an important plot element. They are
theoretical enemies, since Eirick's father tried to seize the throne
which Kir's father is currently the heir to and which Kir will
presumably in time inherit. One of the points made when they decide to
swear brotherhood is that that way nobody can make them fight each other.
In addition, Kir's father Kieron and Kieron's brother, the king, are
very close, and their relationship of mutual trust is an important
background element to the story.
The basis for the second is more indirect. Both Kir and Eirick are
enthusiastic chess players, and chess plays a minor role in the plot.
Perhaps more important, the bad guys, the Dorayan League, try to use
various other characters as pawns in their political manipulations,
mainly via magic.
Any opinions? The book started out in part about the industrial
organization of the magic industry, with three different versions in
three different polities, but that's really only background now, so I
don't think it makes sense to base a title on it.