Do you know why CAUAYAN was named CAUAYAN?

PHOTO SOURCE: http://www.upgrademag.com/web/2015/08/11/isabelas-cauayan-aims-to-become-a-full-fledged-digitally-enabled-city/

There are two versions of how Cauayan City was named. The first story goes like this.

"Cauayan have its name from the word Kawayan meaning bulo in the Ilocano language, the early settlers of the place. How it got its name is vaguely told by the natives. In the tale, early Spaniards reached the place found abundant bamboo trees along creeks that circled the town site of Bulod, Sipat, Bungkol, and Marabulig creeks where few families lived. It was also a common to see crocodiles basking under the cluster of bamboo along the creeks in the early morning sun." (https://en.wikipedia.org/wiki/Cauayan,_Isabela)

The second story has a more religious tone.

"Another version of how the town was named is this way: One day the miraculous image of the Blessed Virgin Mary disappeared. For many weeks, a tireless search was undertaken but it was nowhere to be found. Then one day in October the image was found among the bamboo groves. Not a single sign of mishandling or scratch was detected on the image. " (https://en.wikipedia.org/wiki/Cauayan,_Isabela)
Do you know other stories on how Cauayan city got its name?