"You have his helmets."

Translation: Zȳhī geltī emā.

[AchilleanStudent]

When would you use jāhī and zȳhī. Do they agree with whatever the pronoun is standing for? What if the noun is a name or of unknown gender?

[BluuDuud]

Jahi is for terrestrial and aquatic nouns.
Zyhi is for solar and lunar nouns.
Since most words for people are lunar and solar, zyhi, is used more often than jahi.
Also "targarien" is a terrestrial noun so jahi is used for it