Gotthard Deutsch,
Jewish Encyclopedia — Abraham ben Isaac ben Jehiel of Pisa
“ He died, according to the report of Gedaliah ibn Yahyah, in 1654, in the prime of manhood. Michael is mistaken in thinking him to be identical with that Abraham Ben Isaac of Pisa from whose pen a responsum exists in the collection of Menahem Azariah da Fano, who died in 1620. ”
