▁and ▁his ▁death , ▁. ▁C let us ▁was ▁a ▁Roman , ▁who ▁during ▁his ▁ten ure ▁as ▁po pe , ▁is ▁known ▁to ▁have ▁ord ained ▁a ▁number ▁of ▁pri ests ▁and ▁is ▁tradition ally ▁cred ited ▁with ▁setting ▁up ▁about ▁twenty - five ▁par ishes ▁in ▁Rome . ▁Although ▁the ▁precise ▁dates ▁of ▁his ▁pont ificate ▁are ▁uncertain , ▁he ▁"... d ied ▁a ▁mart yr , ▁perhaps ▁about ▁ 9 1 ". ▁C let us ▁is ▁mentioned ▁in ▁the ▁Roman ▁Can on ▁of ▁the ▁mass ; ▁his ▁fe ast ▁day ▁is ▁April ▁ 2 6 . ▁ ▁Name ▁and ▁et ym ology ▁The ▁name ▁" C let us " ▁in ▁An cient ▁Greek ▁means ▁" one ▁who ▁has ▁been ▁called ", ▁and ▁" An ac let us " ▁means ▁" one ▁who ▁has ▁been ▁called ▁back ". ▁Also ▁" An enc let us " ▁( G reek : ▁ Α ν έ γ κ λ η τ ος ) ▁means ▁" un im pe ach able ". ▁ ▁The ▁Roman ▁Mart y ro log y ▁mentions ▁the ▁Pope ▁in ▁question ▁only ▁under ▁the ▁name ▁of ▁" C let us ". ▁The ▁An nu ario ▁Pont ific io ▁gives ▁both ▁forms ▁as ▁alternatives . ▁E use b ius , ▁I ren ae us , ▁August ine ▁of ▁Hi ppo ▁and ▁Opt atus ▁all ▁suggest ▁that ▁both ▁names ▁refer ▁to ▁the ▁same ▁individual . ▁ ▁Pap acy ▁C let us / An ac let us ▁was ▁tradition ally ▁understood ▁to ▁have ▁been