FACTS:

Astro obtained loans from Philtrust Bank, secured by promissory notes that were  signed  by  Roxas,  both  as  President  of  Astro  Electronics  and  in  his personal capacity.  Thereafter, PhilGuarantee bound itself  as a guarantor.  At  default  of  Astro,  PhilGuarantee  paid  the  obligation.    It  then  filed  an action for collection of money from Astro and Roxas.  
 

HELD:

Under  the  Negotiable Instruments Law,  persons  who  write  their  names  on  the  face  of promissory
notes are makers, promising that they will pay to the order of the payee or any holder according to its tenor.  
 
At the study of the instrument, the allegations of Roxas are bereft of any merit—that  is,  the  words  “in  his  personal  capacity”  were  added  after  he signed the instrument.