They did not marry. Carlota had been married twice before to Bartolo Ybarra and Jose Maria Noriega. Divorce papers have not been found for either of the marriages.
Rafael & Carlota's affair began in the latter 1920's. In 1928 Gustavo Robles was born. Carlota called him, "Ernest/Ernie." In 1930 they had a daughter named Candida Gregoria who Carlota called, "Angela". Neither of the children were ever known by their legal birth names. And they did not share the Granado last name legally.