Zyanya

Hi! A fellow Zyanya here.
My dad also named me Zyanya after a princess in a book, and on my 16th birthday I was given this book. The book is called Aztec by Gary Jennings. I have done my fair share of research on this name, and from what I have seen, Zyanya was supposedly a Zapotec princess. Although the name comes from a book called Aztec, the name is actually Zapotec which is a pre-Colombian indigenous group that resided in modern-day Oaxaca. It means “forever and always” and most of my life I’ve let people call me Zee-on-yuh, but my father/family says it is actually Cyahn-yah.

It's Zapoteco, not Nahuatl. [noted -ed]

Means "Always, Forever" People think that it comes from the language Nahuatl, but in reality it is from a nation called the Mixtecs located in central Mexico, Mixtecs means "the cloud people" and the language is totally different from Nahuatl.
The term Mixtec (Mixteco in Spanish) comes from the Nahuatl word Mixtecapan, or "place of the cloud-people". The area in which Mixtec is spoken is known as the Mixteca. The Mixtecs call themselves "ñuu savi".

The actual full meaning is 'a declaration of one's undying love and respect for each other' in a shorter version; always and forever. It's from an Aztec tribe called the Cloud People. She was the daughter of the king and queen (therefore she was a princess.)