Quote Originally Posted by Kazrah View Post
Technically it goes somewhere between Middle English and Shakespearian/Elizabethan era English.

Old English is much closer to Welsh, because apparently it wasn't until Chaucer that vowels were invented in the English language.
Old English has very little in common with Welsh.
English is (and was) a Germanic language and as such is related to languages such as German, Dutch, and Swedish. This was even more obvious in Old English before the Battle of Hastings and subsequent influence of French.
Welsh on the other hand is a Celtic language.

The archaic English used by certain NPCs in FFXIV is neither Old English, nor Middle English. It is Modern English. Even at its worst it is a variant of Shakespearian/Elizabethan era English with modernized spelling.