In Spanish, the letter used to be pronounced as a voiceless postalveolar fricative /ʃ/, identical to the digraph "sh" in English.

It was named "Sasmuan" because it is where the Pampangos meet when they were at war with the Chinese in Guagua.

[7] In 1991, the spelling was unanimously changed into Sasmuan, due to perceived sexual connotations.

[8][9] Sasmuan already had a well-developed system of government well before the era of Spanish colonization.

It stands right beside the Río Grande, a river that connects Pampanga to Manila Bay.

The structure is said to have been built by Jose Duque in the 17th century, was rebuilt in the early 1800s, and was reinforced by Toribio Fanjul in 1884.

Founded in 1590, Santa Lucia is a parish of the Vicariate of St. Joseph in the Archdiocese of San Fernando.