Compound middle names like Dela Cruz, Quintos Deles, Villa
Roman
What will be the middle initial to be used in case the middle
name is Dela Cruz, Quintos Deles or Villa Roman.
The middle initial that should be used should be the first
letter of the middle name. For Dela Cruz , the middle initial
should be "D". For Quintos Deles "Q". For Villa Roman "R".
Check NSO official site:
http://www.census.gov.ph/civilregistration/problems-and-solutions/compound-middle-names-dela-cruz-quintos-deles-villa-roman