I did not know about the President of Philipines. I have received communicates from there. Really is difficult to find the link between the Acunas from Spain/Portugal and their descendents. Even for me in Spain was a lot hard. I spent ten years building my family roots and might be impossible if I have not a lucky strike finding the person and sources which permit to discover my genealogic tree, 42 generations from the year 650 A.C. until today. I am a fortunate man.
There are Acuñas around all the world and in Texas. I have the feeling that in Texas remains some of the old spanish style.
As you know, your surname is "DE ACUÑA". Do not forget it.