Mercedes del Carmen Guillén Vicente (born 5 June 1954) is a Mexican politician from the Institutional Revolutionary Party. From 2009 to 2012 she served as Deputy of the LXI Legislature of the Mexican Congress representing Tamaulipas. She is the sister of Rafael Sebastián Guillén Vicente, whom the government alleges is the real identity of Subcomandante Marcos, the leader of the EZLN Zapatista guerrilla in Chiapas.
María del Rosario Ibarra de la Garza (24 February 1927 – 16 April 2022), also known by her marital name Rosario Ibarra de Piedra, was an activist and prominent figure in the politics of Mexico. She was a presidential candidate and was the serving president of Comité Eureka at the time of her death.In March 2006, the Party of the Democratic Revolution (PRD) designated Ibarra as its candidate to the Senate via proportional representation to serve during the LX (2006–2009) and LXI Legislatures (2009–2012); she won.