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| Lacson | |
|---|---|
Current region | Western Visayas, Negros Island Region, Pampanga and Metro Manila, Philippines |
| Etymology | "Sixth Grandson" |
Place of origin | Molo, Iloilo City and Negros Occidental |
Lacson is a Filipino surname with historical roots originating in the provinces of Iloilo and Negros Occidental, with branches later extending to National Capital Region, Cavite, and Pampanga. They are a prominent family involved in business, politics, real estate, and agriculture. Historical records indicate members serving as gobernadorcillos during the Spanish era and later participating in governance, commerce, and civic duties during the Japanese and American occupations.
The Lacson surname originated among Chinese-mestizo families in Molo before the 1849 Clavería decree and likely derives from the Hokkien la̍k-sun. The surname is a transliteration of Spanish orthography from the Chinese-Spanish name la̍k-sun, combining 六 (la̍k, meaning "sixth," possibly indicating birth order) and 孫 (sūn, meaning "grandchild"), and was also historically spelled as Laxon and Laczon by the Spaniards.
The clan traces much of its documented ancestry to Don Lorenzo Lacson and his descendants, although its origins likely extend further back, possibly to the 1700s. As the surname predates the 1849 Clavería decree, it was generally preserved within the lineage rather than widely assigned to unrelated families. Consequently, individuals bearing the Lacson surname, as well as those who can trace their ancestry to the Lacson line, are generally considered to be distantly related through common ancestral origins.

