Up to my knowledge the Guevara's family came to Puerto Rico, late in the 19th century. I have knowledge that they established in two different places: Aibonito, Puerto Rico and in Isabela Puerto Rico.
I'm the descendant of Genara Guevara Texidor, daughter of Carlos Guevara Santini and Adelaida Texidor Suárez. Her father, Carlos Guevara was the son of Agustín Guevara and Genara Santini Bonilla. They used to live in Aibonito, Puerto Rico.
My grandfather nieces and nephews last names known by me were a combination of: Guevara Castañeira; Guevara Marrero; Guevara Aponte; and Guevara Texidor which were my mothers family.
Josefina Guevara Castañeia was an excellent poet and novelist. She wrote: Del Yunque a los Andes; Los Encandenados and a lot of poems which were recited and recorded by Actor Ray Francisco Quiñones.
As I know the family came through Venezuela from Barcelona. Thus, the origins are from Barcelona. Josefina Guevara Castañeira gave me copy of my great grandfather and mother: Agustín Guevara and Genara Santini. I still have the pictures.
I also have a familiy tree from the roots of Agustín Guevara.
Whether we have the same origins as the Guevara's families from Mexico, I do not know.
I hope that this information be helpful in getting more information from members of my family ancestors.