The time period you gave sounds like mine. I do not know my grandfather's name, but I thought it was Hector. My Father was born in 1929 in PR. My Grandfather died at an early age when my father was a small boy and his mother never re-married. My dad's brothers were named Herbert and Manuel. Manuel was killed in WWII. One of my aunts is named Margerita, she is about 72. My father had twin brothers/sisters but they both died as babies, this would have been in the 1920s. None of my immediate family lives in PR. Since my dad was in the US Air Force, we were raised in Fla. Let me know if this helps any. As I learn more, I'll let you know.