He was married to Carmela Ledon (? - 20 July 1942) and they had one child, Carmen Mendieta-Ledon, who married Calixto Garcia Velez.
References
^Staff report (29 September 1960). Carlos Mendieta, Ex-Head of Cuba; President, 1934-35, Dies. Reformist Served After Overthrow of Machado. The New York Times
^Phillips, J.D. (11 December 1935). Mendieta Resigns Cuban Presidency; Steps Out After His Failure to Conciliate Political Parties Preparatory to Elections. State Secretary Named Barnet Provisional Executive -- Ministry and Council of State to Meet Today. The New York Times
Otero, Juan Joaquin (1954). Libro De Cuba, Una Enciclopedia Ilustrada Que Abarca Las Artes, Las Letras, Las Ciencias, La Economia, La Politica, La Historia, La Docencia, Y ElProgreso General De La Nacion Cubana - Edicion Conmemorative del Cincuentenario de la Republica de Cuba, 1902-1952. (Spanish)