[3] Son of high school professor and hispanist Miguel Herrero García, he studied law in Madrid, where, as he says in his Memoirs of Summer, he was "more studious than a student".

A lawyer with the Council of State since 1966, he soon began to collaborate with the press -Diario Ya, Diario Madrid, Informaciones-, spreading his ideas about what the transition to the death of Francisco Franco should be.

[6] Rodríguez de Miñón was Technical Secretary General of the Ministry of Justice, collaborating very actively in the first amnesty (1976), in the Law for Political Reform and in the first electoral regulations of the newborn democracy.

Some authors have identified him as one of the architects of the "harassment and demolition operation" against Adolfo Suárez, which reportedly ended with his being crowned head of the UCD parliamentary group.

[7] Herrero de Miñón also reportedly maintained contacts with political leaders of the opposition with the aim of removing Suárez from power.