1767 : - Born on September 4 at Los Lingues®, San Fernando.
- Study, first, at the Real Colegio San Carlos or Carolino de Nobles Convictorio.
- Higher studies at the University of San Felipe.

1786: - Mayor of San Fernando, elected at 19 years of age.

1790: - Legal Advisor of the Real Audiencia.

1793 : - He obtains the title of Bachelor in Sacred Canons and in Letters, initiating studies to get his Ph.D.
- Manage the family assets in San Fernando, for the death of his father.
- Acting Corregidor of the Villa de San Fernando.

- Corregidor de Curicó.
- Lawyer and Doctor of Laws degree, he practices in Santiago.
- Teacher, first, and Rector later at the University of San Felipe.

1810: - Advisor to the Cabildo de Santiago, and later,
- Procurator of the Cabildo de Santiago.
- Procurator of the City.

- Secretary of the General Captaincy of the Kingdom or Secretary of Government.
- September 18 - Secretary of the First Governing Board
- Prime Minister of Finance of the Board.

1811: - Take the oath to the members of the First National Congress.

1812: - Integrates the Governing Board.

1813: - He is imprisoned by José Miguel Carrera, accusing him of being a conspirator.

1814: - At the request of José Miguel Carrera, he organizes the secretariat of the Intendancy of Valparaíso.
- Race orders to stop him by opponent.
- Flee to Mendoza for the passage "Las Damas".
- In Mendoza, he collaborates advising San Martín in the
political relations of Chileans in Argentina. It was a link between San Martín and the activities of Manuel Rodríguez.

Note : According to the historian Alejandro Lira, he attributes him the position of Captain or Colonel, Commander of the Militias, without specifying a date or clarifying whether he exercised it during the days of the Spanish invasion.

1817: - Argomedo returns to Chile.
- Adviser to the Government of O'Higgins.
- Public Tax Attorney.
- Elected Rector of the University of San Felipe.
- Subroga as Head of State to Ramón Freire that goes to Chiloé.
- President of the Congress, on November 22, after being elected deputy for the District of San Fernando.

1818: - From the position of Government Advisor to the Prosecutor of the Chamber of Justice.
- Rejects land in Maipo offered by O'Higgins.

1819 : - Replaces Mr. Fernando Márquez de la Plata in the Chamber of Justice.

1820-21-22 : - Rector of the University of San Felipe.

1822: - President of the Supreme Judicial Court.
- Integra commission that reviews and improves the Constitution of 1822.

1823: - Vice President of the National Congress.
- Deputy elected by San Fernando.
- President of the Supreme Court of Justice elected by Congress.
- Integrates the commission that draws up the Constitution of 1823.

1824: - Member of the Council of State appointed by Ramón Freire on February 2.
- President of the Council of State.
- Subroga as Chief of State to Ramón Freire who goes to Chiloé.
- President of the Congress, on November 22, after being elected deputy for the District of San Fernando.

1825: - Freire accuses him of subversion being imprisoned.
- Considered innocent, the Presidency of the Supreme Court of Justice is reinstated on April 7.
- On July 12, he is elected deputy for Colchagua to the National Congress. Waiver of the charge due to bad economic situation.
- December Freire sends him in exile to Lima, Peru.
- Visit to O'Higgins in Motalván.

1826: - Meeting with Simón Bolívar at the Residence of Virreyes, La Magdalena, near Lima.
- Return from Peru to be amnestied in September.

1827: - Elected Senator for Colchagua.
- The position is restored in the Supreme Court of Justice.

1828: - He is appointed Minister of the Supreme Court.

1829: - President of the Supreme Court.
- Member of the Peace Court.
- Intendant of Colchagua.

1830: - He died on October 5 in Santiago.