In Bilibid, de los Reyes wrote his "Memorial sobre la revolution", which initially was the "Memoria de agravios de los Filipinos". The document was addressed to the Governor-General, Fernando Primo de Rivera and was meant to gain sympathy for the rebels. His "Memoria" pointed out that the friars sowed the seeds of colonial revolt in the Philippines. de los Reyes' wife, Josefa, died while he was in prison. When his son, Jose, broke the news to him, de los Reyes wept unabashedly.