[3][4][5] Her paternal uncle was the politician and general Saturnino Cedillo, governor of the state of San Luis Potosí from 1927 to 1931 through the Partido Nacional Revolucionario.
Her father's family were involved in political and military activity around the Mexican Revolution (1910-1920) and the Cristero War (1926 – 1929), and several uncles and aunts were killed or imprisoned for their parts in the struggle.
[8] She owned a 549K biplane, designed by the leading aviation engineers in Mexico, Mexican Guillermo Villasana López and Italian Francisco Santarini Tognoli[3] who ran the Talleres Nacionales de Construcciones Aeronáuticas, the national workshop for aeronautical construction.
[citation needed] On the morning of 6 June 1933, María Marcos took off in her plane accompanied by her student and mechanic, José Ramírez, to perform aerial stunts.
[7] General Saturnino Cedillo later went to the scene and fired all the bullets from his pistol at the remains of the plane that he blamed for taking the life of his niece María, who he had cared for since the death of her father.