According to information, during the Spanish times, Malusi was the original name of the Barangay. A certain Chinese who was on his way to the Barangay meet a certain inhabitant. It happens that this Chinese fell in love with one of the barrio maidens. During those days, as we all know, marriages were agreed upon by the parents of both parties. Sometimes would-be husbands and wives meet each other for the first time only during the wedding day.

The Chinese man actuation didn’t seem favorable to the parents of a woman. Besides, it was claimed by others that the Chinese do not make good husbands because of their traditional customs of holding the purse of the family. Angered by the frequent visit of the Chinese suitor, the father of the woman plan to stop the man once in for all. He asked someone to mob the Chinese. The Chinese were unaware of the plan so he continued to see the maiden.

One day, when he was about a few meters away from the maiden’s house, he was beaten up almost to death. When he was asked what happen to him, all he could utter was “Malu Sy” because he could not speak the dialect well. He could not tell the complete sentence of “Minalu da Ni Sy” which means “They had beaten up Sy”. Sy was the Chinese name and Malu was Minalu for short. So from that time on the Barrio had been called Malusi.

This name, however, did not last long, for its meaning was so indecent to the Ilocano. Years later when the oldest and richest member of the Antonio Family became the Chief of the Barrio changed the name of the Barrio to SAN ANTONIO. Later on, because of its name, the people made Saint Anthony De Padua their Patron Saint.