A lot of Filipinos descended from hispanic or hispanic-influenced families and carry that name with them. Some examples are del Rosario, Loyola, Soriano, de los Santos, Sanchez, Miranda, or Villa.
A lot more have Chinese-sounding last names like Tan, Te, Tiu, Uy, Lu, or Chu.
A lot more have American-sounding names like Cassidy, Young, Long, Horn.
A lot more have European-inspired last names like Potylanski, Vermicilli, Hofstedtler, or von Auber.
Still a few more sound Jewish, like Levine.
But a few still sound native Filipino like Hapla, Patay, Palantang, Bahaghari or Cagalitan.
The reason for these weird sounding last names are how they find their way to be the last names. Some by choice, some by preferences, some by affinity, some by consanguinity, some by intermarriage, some by court order, some by coincidence.
How did you derive yours?
