Career
He was Senator for the Province of Santiago, and also the President of the Senate of the Dominican Republic on three times: 1914–1916, 1930–1938, 1955. During his tenure as senator he drafted the bill that in 1935 renamed the Dominican capital, Santo Domingo, for Trujillo City in honor of dictator Rafael Trujillo. He also promoted in 1943 the construction of Centro de Los Heroes in the capital city.
Cabral y Báez was son of Marcos Antonio Cabral y Figueredo and Altagracia Amelia Báez Andújar (daughter of President Buenaventura Báez).
On 24 November 1900, Cabral y Báez married Amelia Josefa Tavares Saviñón and they had 4 children: María Estela, Pura Amelia, Manuel Antonio and Ramón Cabral Tavares. He enwidowed and remarried with María Josefa Tavares Tineo, they had one girl: Altagracia Amelia Cabral Tavares.
He also procreated with Sixta América Stéfani, an Italian-Dominican, another girl: Dulce Enilda Altagracia Cabral Stéfani (1925–2008).