Middle English?

The current situation of pestilence and disorder, not to mention general apocalypticism, is distinctly reminiscent of the fourteenth century - though without all the splendour of that complex century “when the ideas of the Middle Ages could neither live nor die” - but which did inter alia see the re-emergence of a rich and lively English vernacular literature, “... all the exuberance of the age of Chaucer with none of the concomitant vulgarity” *

With this in mind one of my regular correspondents, The Shropshire Lad, has shared this recent discovery from the world of Middle English: 

Sunac is icumen in

Llude sing Rishi!

DresseÞ flash

And bloweÞ cash

And shakeÞ money tre

Sing Rishi!

Leader of Þa sumer six

Locdoun haÞ a key

Boris siccens 

Cumings chiccens 

Merrie sing Rishi!

Rishi! Rishi!

Wel singes ye Rishi!

And set Þam folces fre

Sing Rishi ye! Sing Rishi!

Sing Rishi! Sing Rishi ye!

* To quote from Kind Hearts and Coronets