I actually role play this aspect of it - not nobility, but a wealthy merchant family who now have to learn with being dirt poor and homeless in Eorzea. It does bring its own troubles, as we dont know what arts and what activities the doman public enjoyed. However we know they kept at least part of their ancient language alive through naming convention.
Hotaru Ginji || Argasar Mol || Nonorya Dadarya
 SE pls give FFT Moogles. Kupo