Lorenza, then seven years old, helped her mother in sewing the flag together with Rizal's niece, Delfina Herbosa Natividad.
Aguinaldo took the flag with him when he sailed back to the Philippines on the U.S. transport McCulloch after the defeat of the Spanish fleet in Manila Bay.
It was waved from the window of Aguinaldo's house in Kawit, Cavite after he declared the independence of the Philippines on June 12, 1898.
She sang beautifully and recited with ease poems like José Rizal's “Mi último adiós” at family gatherings.
Agoncillo lived through the hardships of the Japanese occupation and the horrors of the liberation of Manila, during which the family house was destroyed.