Phonetic transliteration:
艾 (ài) approximates 'A' and
奎 (kuí) approximates 'qui' / 'kwi'. The standard PRC rendering of 'Aquino' is
阿基诺 (Ājīnuò) —
艾奎 is an alternate, often subtitle-corpus, choice. Treat as a name; in conversation specify which Aquino (politician, character, etc.) to disambiguate.