There once was a woman named Ramona Aguon Alejandro. From the Aguon, we know she was Chamorro. Alejandro is Spanish for Alexander, but we don't know if her father or grandfather was a Filipino, Mexican, Spaniard or what-have-you.
Ramona married Andres Camacho Castro. They had at least three sons, maybe more : Marcos, Jose and Francisco. These three are listed in the 1897 Census, but Ramona had died by then.
There is also a widow listed in 1897 by the name of Josefa Alejandro. She could have been Ramona's sister.
But there were no males surnamed Alejandro in the 1897 Census, and the name died out.