If you're trying to correct the misspelling "Leysupinne", there are a few plausible options. You could consider "Ley Supine", a term that refers to a legal principle of granting land tenure. Alternatively, "Ley Supine" could be a fictional character's name. Another potential suggestion could be "Leyspine", where "ley" could refer to a field or area of land and "spine" implies strength or structure.
