Fabiana Sebastiana María Carmen Romero Rubio y Castelló (20 January 1864 – 25 June 1944), was the second wife of Porfirio Díaz, President of Mexico.

Carmen's father, Manuel Romero Rubio, was active in Mexican politics since 1854 with his participation in the Plan of Ayutla [2] to his death in 1895, when he was the Secretary of the Interior of Porfirio Díaz.

[3] He was also a prominent figure of the governments of Benito Juárez and Lerdo de Tejada, and participated in the formulation of the Constitution of 1857, which separated the functions of the Catholic Church and the State.

On November 5, 1881, don Porfirio married Carmen Romero Rubio in a civil ceremony, with the President of Mexico Manuel González serving as witness, according to the new secular Reform Laws.

They honeymooned in the United States, traveling across the country, using the opportunity to establish important contacts with American politicians and businessmen whom Díaz hoped would invest in Mexico.

Working with the wives of cabinet members, governors, and regional oligarchs, she formed and chaired relief committees responding to natural disasters.

She played an important role in the rituals of the Mexican colony in Paris, organizing memorial masses for Díaz and for the feast of the Virgin of Guadalupe.

Carmelita spent much of her time traveling around France and Spain, and frequently summered at her stepson Porfirio's chateau de Moulins, close to Landes-le-Gaulois.