kayu on Family Tree Circles

Hello, I am looking for my grandfather, Isidro Guerero of virac catanduanes Philippines. My own father has been searching for him in years. My father has never met him as he left when my grandmother was pregnant with my father. My father has recently diagnosed with cancer and he would love to know what happened to his father. He wanted some closure and I am here to try to help him find his father. Hope someone can read this and be able to help me.