He served as the fiscal (prosecutor) of the Royal Court of Seville, a professor of Law at the University of Seville, a fiscal of the Royal Council of Navarre in Plaza de Castilian, a magistrate of the Audiencia of Galicia, and a magistrate of Crime in the Chancery of Granada for the Crown of Castile.

[1] As a collegiate member of the University of Seville, he became a First Class Professor of Prima Law by competitive examination, an activity he carried out until 1627.

He was then appointed as a fiscal (prosecutor) of the Royal Council of Navarre on 18 June 1630, filling the vacancy left by the death of Pedro de Villafranca.

He then rose to magistrate of the Criminal Court of the Chancery of Granada on November 27, 1639, a position he held until 1660, the year of his death.

The initial section centers on confirming Antonio Molina de Medrano's legitimacy, supported by ample evidence of his parents' lawful union and his status as their legitimate offspring.

His father states, From the moment I first had dealings with her, it was always my intention and desire to be her husband, to marry her in the manner prescribed by the Holy Mother Church.