Cabral y Báez was born to President Marcos Antonio Cabral and Altagracia Amelia Báez (daughter of President Buenaventura Báez); he had 7 siblings, among them, Mario Fermín Cabral y Báez. On 17 November 1897, he married María Petronila Bermúdez y Rochet, daughter of Erasmo Bermúdez Jiménez, the founder of Bermúdez rum company; they had 6 children: Amelia María (1899–1996), Auristela (1901–1988), José María (1902–1984), Marco Antonio (1906–1973), Josefina Eugenia (1910–1994), and Pedro Pablo Cabral Bermúdez (1916–1988). He also begat 3 children with Estela Navarro: Mairení, José and Raúl Cabral Navarro; with Rafaela Meyreles he sired 2 children: Rafael and Enrique Meyreles.[2]
Ancestors of José María Cabral y Báez
16. Marcos Cabral Valera (†1838) Hincha, Colony of Santo Domingo
8. Juan Marcos Cabral y Aybar (1792–1853) Hincha, Colony of Santo Domingo
17. María Aybar de Luna Hincha, Colony of Santo Domingo