HEIRS OF PROCOPIO BORRAS, NAMELY: VICTORIANO BORRAS, LORENZO BORRAS, JOSE DESCALZO, ISIDRO CORDOVILLA, RODOLFO CORDOVILLA, REPRESENTED BY THEIR CO-HEIR AND ATTORNEY-IN-FACT, RAUL CORDOVILLA, PETITIONERS, VS. THE HEIRS OF EUSTAQUIO BORRAS, NAMELY: ANGELINA B. GARAY, INOCENCIO BORRAS, ESTER SANTANDER, AMADO BORRAS, AND PORFERIO BORRAS, RESPONDENTS.[1