Isabel Luberza Oppenheimer (23 July 1901 – 4 January 1974), better known as "Isabel la Negra", was a Puerto Rican brothel owner and madam in barrio Maragüez, Ponce, Puerto Rico. Her name and her brothel, Elizabeth's Dancing Club, became part of Puerto Rican folklore both during her life and posthumously.
Andrés Grillasca Salas (6 January 1888 – 19 December 1973) was a Puerto Rican farmer from Adjuntas, Puerto Rico, and Mayor of Ponce, Puerto Rico, from 2 January 1941 to 9 May 1956. Until the 1990s administration of Rafael Cordero Santiago, Grillasca Salas had the distinction of being the longest-serving mayor of the city (16 years). He was known to always dress in white clothes.