nigontene [OE]
nintene [MI]
nineteen [ME]
nyntien
https://www.etymonline.com/word/nineteen#etymonline_v_6960
https://www.merriam-webster.com/dictionary/nineteen
https://quod.lib.umich.edu/m/middle-english-dictionary/dictionary/MED29550
https://bosworthtoller.com/23710