My grandfather's family immigrated to Puerto Rico before 1900. My father, John Randolph Caballero) was born in San Juan in 1916. His brother, Mariano Cecil Caballero, graduated from MVA as well and became an Ophthalmologist in PR, later taking the medical boards in Florida. My grandfather graduated from the Medical College of Virginia and went to to become an EENT in PR. His patients included the wealthiest man in Puerto Rico and at least one governor (Munos Marin). Is there any chance that you might know any decedents or family members of Dr. Mariano Bernardo Caballero?