By Josefa Peréz ... his father had a natural son, born before his marriage, Fruto Chamorro Pérez, 30th and 31st President of Nicaragua.

At an early age, he left off studies to dedicate himself, together with his brother Dionisio, to the management of paternal inheritances under the guidance of their half-brother Fruto Chamorro.

They had three children: In 1849 Pedro Joaquín Chamorro became mayor of Granada and in 1854, he participated in the defense of the city, besieged by Máximo Jerez.

In both his public and private life, Don Pedro was considered progressive by some and an opportunist by many others, when conservative forces would keep "campesinos" without access to education,.

He represented a faction of the Granada oligarchy and maintained strong conservative principles, which in Latin America meant the preservation of a feudal economic system, with an emphasis on trade.