>I've no direct experience with, say, Russian or Latin American governments, but cultures that use explicit patronymic or matronymic names might expect that broken out as well.
In Ukraine we either have three fields in government forms (Family name, Given name, Patronymic) or two (Family name, Given name), for example on ticket booking forms. Or just one, but you should write names in FGP order.
Funny thing is that patronymic part is left out in transliteration, so in travel documents you see FGP form in Cyrillic and FG form in Latin letters. Transliteration algorithm is a bit funny, so people tend to have different Latin spelling of same name. And even different Cyrillic spelling of same name, depending if it's written in Ukrainian or Russian - Ukrainian, because Russian doesn't have dotted and double-dotted "i", the use "и" instead.
In past the formal way to address people used given name and patronymic, but that's not that true anymore.
In documents, sometimes full FGP form is only used at the start of the document and subsequent uses just include family name and first two letters of given and patronymic name. Tha is the only thing you can safely do automatically. Signatures also use this short form.
Other thing is that, male and female version of patronymic and family name can differ, so you can't even compare names, not just process them automatically.
And the good thing with patronymic names - combination of three names and birth date uniquely identifies 99.7% of voters, so this really matters.
