From July 1, 1788 to September 1, 1793 he was the
Governor General of the Philippines. On August 15, 1789 by royal decree
Manila became an open port to all but European products. He proposed plans for reform of the government. He became the namesake to one of the Philippines' largest cities,
Marikina. His 4th direct descendant, Ananías Diokno y Noblejas or the “General of the Seas,” was President
Emilio Aguinaldo’s Naval General and was reputedly the only Philippine Revolutionary Army general to lead a full-scale military expedition to the
Visayas against the Spanish forces. His successful landing in
Bicol and Visayas were considered one of the first missions of the
Philippine Navy. Berenguer de Marquina had an extramarital relationship with a native
Tsinoy woman in Bicol named Demetria Sumulong with whom he sired a daughter named Isabel Berenguer de Marquina. It is from Isabel that the
Sumulong and
Diokno political clans of the provinces of
Rizal and
Batangas respectively descended. Other provinces with clans descending from Isabel include
Cavite and
Camarines Sur, Bicol. Berenguer de Marquina then left the country for Mexico upon his new appointment. A few notable descendants of Isabel, the daughter whom Berenguer de Marquina abandoned in the Philippines include, pro-Filipino nationalist senator and
Supreme Court Justice- Sen.
Ramón Diokno; the Father of Human Rights and son of Don Ramón- Sen.
Jose W. Diokno; Judge Roberto Diokno; Filipino Lawyer,
Tañada-Diokno School of Law Dean, congressman, and Human Rights Advocate - Cong.
Chel Diokno; Filipino Historian at
UP Diliman and former
NHCP Chair - Maris Diokno; Prolific Writer, Author in Arts and History, and Culture Advocate - Santiago Diokno;
Ben Diokno - Philippine
Secretary of Finance;
Juan Sumulong and son
Lorenzo Sumulong - Filipino senators and lawyers; and
Corazon Sumulong Cojuangco-Aquino and son
Benigno Aquino III - Filipino presidents. Berenguer returned to Spain in 1795 to take up a position in the administration of the navy. In 1799, he was promoted to lieutenant general of the navy. ==Viceroy of New Spain==