While Shirerithian English and Audente stayed the language of the plebs, Dutch became increasingly popular fort the elites. A kind of Shirerithian Dutch was developed which slightly differed from the real Dutch (it's the older Dutch, e.g.: 'I' is 'ik', but in Shirerithian Dutch it's written in the oldfashioned way: 'ick'). We have come to a point in which the elites demand to make Dutch one of the official languages.
Why do I do it? First of all: it's easier for me, I don't need to put weeks in developing my own language which likely nobody will use. Secondly, it's easier for others: Google has a translator that isn't that bad (this is an advantage for non-Dutch speakers).
Imperial Republic of Shireroth = Keizerlijke Republiek Shireroth
Duchy of Kildare = Hertogdom Kildare
County of Greater Audentior = Graafschap Groter-Audentior