Gregorio S. Araneta

In 1891, he graduated from the University of Santo Tomas with a degree in law. He defended prominent Filipinos accused of financially supporting the Katipunan.

In May 1898, Araneta was appointed member of the 21-man Consultative Assembly, which the Spanish Governor-General of the Philippines Basilio Agustin formed in an attempt to rally Filipinos to the Spanish side of the Spanish–American War. This assembly, however, failed.

Aguinaldo's Cabinet

Araneta participated in the drafting of the Malolos Constitution. He resigned as Secretary and accepted his appointment as Justice of the Ministry of Justice.

During the first Senatorial election in 1916, he ran for a seat in the Senate but lost to Rafael Palma. In 1916, The Independent, mocked Araneta for defending Spanish friars to reoccupy Filipino parishes and being an "imperialist" while serving as Solicitor-General under Governor General William Howard Taft. That same year, he accepted a teaching post in the University of Santo Tomas and at the same attended to his private law practice. Araneta convinced the Supreme Court to reverse its previous decision on two cases. Araneta also gained respect for his ethical principles. He turned down the offer of House Speaker Sergio Osmeña to seat as Chief Justice of the Supreme Court in favor of Manuel Araullo, who he thought to be more deserving for the post. He was again offered the same position during the time of Senate President Manuel L. Quezon but he also declined, this time for delicadeza, because he was then involved in a case pending before the Supreme Court.

Araneta married Carmen Zaragoza y Rojas on March 7, 1896. The couple had 14 children: Carmen, Jose, Salvador, Consuelo, Paz, Rosa, Antonio, Teresa, Ramon, Vicente, Conchita, Margarita, Luis and Francisco.

Supreme Court

On January 25, 1899, the Diplomatic Corps of the First Philippine Republic was organized and Araneta was among those appointed as member but he chose to abandon the revolutionary government. Months after the Philippine–American War broke out, America established the civil courts in the Philippines. In May 1899, General Elwell Otis appointed Araneta as Associate Justice of the Philippine Supreme Court, the youngest to occupy the position at 30 years old. Araneta's sympathies became clearer when he joined the Federal Party that favored America's annexation of the Philippines.