Lorenzo Alberto Florentina Alonzo was believed to be a descendant of Lakandula, a Bornean Moslem (as traced by Mr. Luther Parker in his study of the Pampangan migration from oral histories).

Lorenzo was educated as a surveyor. He was wealthy, and had considerable investments in American Manila shipping firms of Peele, Hubbell & Co. and Russell, Sturgis & Co. He served as the municipal captain of Biñan in 1824.

The family story is that he became acquainted with Brigida de Quintos, his future wife, while he was a student in Manila, and that she, being unusually well educated for a girl of those days, helped him with his mathematics. Their acquaintance apparently arose through relationship, both being connected with the Reyes family. All of their children were born in Manila, but lived in Calamba. They used the name Alonzo, until the implementation of the Claveria decree in 1850 when, the family adopted the surname Realonda.

Sources:

• Craig, Austin. "Lineage, Life and Labors of Jose Rizal". Manila: Philippine Education Company, 1913. http://bit.ly/N3Y6X7
• Gallery of Illustrious Filipinos (1917), by Manuel Artigas (Volume I, p. 384-385)
• Panlasigui, Isidro. "Dr. Jose Rizal's Chinese Ancestry". Fookien Times Yearbook, September 1953.

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Lorenzo had a mistress named Brigida Quintos; their union would produce five children, including Teodora Alonso Quintos, the mother of Jose Rizal. Teodoro's family had their surname changed to 'Realonda' to comply with the Claveria edict.