in, inne [OE]
in [MI]
https://www.etymonline.com/word/in#etymonline_v_6283
https://www.merriam-webster.com/dictionary/in#dictionary-entry-1
https://quod.lib.umich.edu/m/middle-english-dictionary/dictionary/MED22279
https://bosworthtoller.com/20646
https://bosworthtoller.com/20487