Complex sentence: It is sometimes found in hispanicised compound surnames such as "Limtiaco"; this type of surname is very common among Filipino-Chinese, and is derived from the full name of a Spanish-era immigrant ancestor that had converted to Catholicism.
Split into simpler sentences: It is sometimes found in hispanicised compound surnames such as "Limtiaco". This type of surname is common, and is often derived from the original name of a Spanish-era immigrant ancestor that had converted to Catholicism.