While a preacher at Prague, he was called as rabbi to Worms in 1670, later holding the rabbinical seat of Cracow (Kraków), Poland.
Soon after taking up the Cracow post, a politically- or financially-motivated order for his arrest was made: His death occurred as a result of mistreatment during his transfer to prison.
Aaron ben Moses Teomim was born about 1630, probably in Prague, where the Teomim-Fränkel family from Vienna, had settled.
[1] In a serious illness which overcame him on Passover evening, 1675, he vowed he would write a commentary on the Haggadah if he should be restored to health.
Another work, Bigde Aharon ('Aaron's Vestments'), homilies on the Pentateuch, was published after the author's death at Frankfurt-on-the-Main, 1710.