Jaime, I took a look at my notes of the Caban index listings of the civil registry microfilm which I refered to in my previous message and I have found 2 listings which might be of interest to you:

Caban y Velez, Eleuteria(o) record birth registered in 1913, Book #48, Folio #70.

Caban y Velez, Juan Antonio birth registered on 9/18/1918, Book #59, Folio #97.

The full records should be on microfilm, you can check that out at: http://www1.familysearch.org/fhlc/supermainframeset.asp?disp...

There are also several listings for Velez y Caban.