▁date ▁the ▁addition ▁of ▁this ▁series ▁of ▁documents ▁to ▁as ▁early ▁as ▁the ▁sevent h ▁century . ▁Klaus ▁Ze ch iel - E ck es ▁has ▁even ▁suggested ▁the ▁first ▁half ▁of ▁the ▁sevent h ▁century ▁as ▁the ▁date ▁for ▁when ▁the ▁addition ▁was ▁made , ▁that ▁is ▁ ▁only ▁shortly ▁after ▁the ▁Bob i ensis ’ s ▁initial ▁compilation ▁and ▁at ▁most ▁only ▁fifty ▁years ▁after ▁Gregory ’ s ▁death . ▁If ▁Ze ch iel - E ck es ' s ▁d ating ▁is ▁correct , ▁it ▁would ▁make ▁the ▁Collect io ▁Bob i ensis ▁the ▁earliest ▁surv iving ▁witness ▁by ▁far ▁to ▁the ▁Lib ell us . ▁ ▁How ▁and ▁when ▁the ▁Lib ell us ▁eventually ▁reached ▁England ▁is ▁not ▁clear . ▁It ▁is ▁not ▁known ▁if ▁the ▁original ▁letter ▁ever ▁reached ▁August ine , ▁its ▁intended ▁recip ient . ▁B ede ▁assumed ▁that ▁it ▁had , ▁though ▁he ▁is ▁rather ▁vague ▁on ▁specific s ▁at ▁this ▁point . ▁On ▁the ▁strength ▁of ▁B ede ' s ▁word ▁alone ▁many ▁later ▁histor ians ▁have ▁claimed ▁that ▁the ▁Lib ell us ▁reached ▁August ine ▁in ▁a ▁tim ely ▁fashion ; ▁however , ▁as ▁mentioned ▁above , ▁recent ▁scholar ship ▁has ▁brought ▁this ▁assumption ▁into ▁serious ▁question . ▁In ▁any ▁event , ▁some ▁version ▁of ▁the ▁letter ▁seems ▁to ▁have ▁been ▁available ▁in ▁England ▁by ▁the ▁late ▁sevent h ▁century , ▁for ▁it ▁was ▁then ▁that ▁it ▁was ▁quoted ▁by ▁The odore ▁of ▁T ars us , ▁Arch bishop ▁of ▁Can ter bury