Gunhalberd?!

[Rhomagus]

Also,

"In subjugating Ala Mhigo, van Baelsar employed subterfuge to stoke the fires of civil unrest, a masterstroke that led to the nation's capture without the need for a protracted siege."

Looks as if Nael van Darnus is attempting to use the same tactics as his compatriot.

A a possible foreshadowing present in the description of Gaius van Belsar's weapon:

Heirsbane- a gunblade said to have spilled the blood of nine apirants to the crown.

Perhaps they could be at odds with one another seeing as how Nael van Darnus...

boasts distinguished parentage in his sire, a founding figure of the Garlean Empire.