I think this is the period when the language starts to become less like a Northern language and more European. We see a lot more recognisable words from French, and the hard alliterative verse of Old English gets softer in Chaucer for example. read more
The “-en” plural noun ending of Old English (e.g. house/housen, shoe/shoen, etc) had largely disappeared by the end of the Middle English period, replaced by the French plural ending “-s” (the “-en” ending only remains today in one or two important examples, such as children, brethren and oxen). read more
Middle English (ME) is collectively the varieties of the English language spoken after the Norman Conquest (1066) until the late 15th century; scholarly opinion varies but the Oxford English Dictionary specifies the period of 1150 to 1500. read more