Marcus. I called the Irish Consulate here in the town where we live in Spain. They were very helpful (unlike the British Consul). My wife has Residencia in Spain so Schengen Area. I suggest you call the Irish Consul in Philippines. Good Luck.
Incidentally. A friend of mine here in Spain, who has dual Irish/ British Nationality, is applying for a Competency to Marry Cert from Ireland. The cost 20 euros !!!!