The Mishnah preserves only two short sayings in Nehunya ben HaKanah's name and places him among the sages of the generation around the destruction of the Second Temple in 70 CE. No source records a death year, and the later medieval attribution to him of the Bahir and the Ana BeKoach prayer is treated by scholarship as pseudepigraphic, supplying no genuine biographical date.
What would resolve this A datable document or independent notice fixing a year in Nehunya ben HaKanah's later life, distinct from the Mishnah's generational placement of his two recorded sayings.
OpenTalmudic chronology, history of the generation of the Temple's destructionGershom Scholem, Major Trends in Jewish Mysticism