▁answers ▁questions ▁about ▁whether ▁or ▁not ▁men ▁might ▁have ▁commun ion ▁after ▁experien cing ▁a ▁sexual ▁dream , ▁and ▁whether ▁or ▁not ▁pri ests ▁might ▁celebr ate ▁mass ▁after ▁experien cing ▁such ▁dream s . ▁An ▁additional ▁chapter , ▁not ▁included ▁by ▁B ede ▁in ▁his ▁Historia ▁is ▁known ▁as ▁the ▁" Ob sec rat io ": ▁it ▁contains ▁a ▁response ▁by ▁Gregory ▁to ▁August ine ' s ▁request ▁for ▁re lic s ▁of ▁the ▁local ▁British ▁mart yr ▁Si xt us . ▁Gregory ▁respond s ▁that ▁he ▁is ▁sending ▁re lic s ▁of ▁Pope ▁Si xt us ▁II ▁to ▁replace ▁the ▁local ▁saint ' s ▁remains , ▁as ▁Gregory ▁has ▁doub ts ▁about ▁the ▁actual ▁saint ly ▁status ▁of ▁the ▁British ▁mart yr . ▁Although ▁the ▁authentic ity ▁of ▁the ▁" Ob sec rat io " ▁has ▁occasionally ▁been ▁question ed , ▁most ▁modern ▁histor ians ▁accept ▁that ▁it ▁is ▁genu ine . ▁ ▁Later ▁use ▁ ▁In ▁the ▁early ▁sevent h ▁century ▁an ▁augment ed ▁version ▁of ▁the ▁D ion ys ian ▁conc ili ar ▁and ▁de cret al ▁collections ▁was ▁assemble d ▁in ▁Bob bio , ▁in ▁northern ▁Italy . ▁To ▁this ▁canon ▁law ▁collection ▁— ▁known ▁today ▁as ▁the ▁Collect io ▁canon um ▁D ion ys iana ▁Bob i ensis ▁— there ▁was ▁app ended ▁at ▁some ▁time ▁a ▁long ▁series ▁of ▁additional ▁pap al ▁documents ▁and ▁letters , ▁including ▁the ▁Lib ell us ▁respons ion um ▁and ▁Lib ell us ▁syn od icus . ▁Some ▁sch ol ars