Saigonnus
Dark Lord
Generally in my experiences I only named sentient weapons, ones with their own lifeforce. That way they ARE characters instead of just a shiny bauble with cool powers. 
Dark Lord
Lore Master
Dark Lord
JourneymanIt goes back to the whole think about how a character like Jayne can name a weapon like Vera even though it may not be that special--if you have the right character, it can work and describe culture.
Istari