Etymology of English from Etymonline:
Old English Englisc (contrasted to Denisc, Frencisce, etc.), from Engle (plural) "the Angles," the name of one of the Germanic groups that overran the island 5c., supposedly so-called because Angul, the land they inhabited on the Jutland coast, was shaped like a fish hook (see angle (n.))
"Old English" article from Wikipedia:
Old English (Ænglisc, Anglisc, Englisc) or Anglo-Saxon is an early form of the English language that was spoken and written by the Anglo-Saxons and their descendants in parts of what are now England and southern and eastern Scotland between at least the mid-5th century and the mid-12th century.
Also, Anglish is used as a resulting language of linguistic purism. (coined by the author and humorist Paul Jennings). It is mentioned as English minus many of the non-Germanic elements.
- Why didn't the name of the language become Anglish and survive till today?
- Etymonline says that it comes from "Englisc" but there are three different spellings of Old English and the root is mentioned as Angul. So why from Englisc but not Anglisc?
Note: There is this question asked before: Where did the name "English" come from?
Accepted answer mentions that English is the corruption of Anglish. But there is not much detail about it. Is it ever called Anglish then? When and how is it corrupted?
Also, English is "Anglais" in French. I'm not sure if it is beyond this website if I ask why it is "Anglais" in French and if connection to other Germanic languages is related to this topic. The topic can go deeper in regards to origin of tribe names also. I may have missed some points and this can be asked in linguistics stackexchange as well.