Very good work, George!
For the remaining :
decretal collections - As I yet told, a Decretum is a compilation of canonical laws. There is some different decretum. A collection of Decretum is called "decretal collection"
If interested, take a look here :
medieval decretum collections
Cum ex eo of Boniface ⅤⅢ : Another decretal collection :
Quote:Liber Sextus is "the first authentic collection of Church legislation after that of Gregory IX (1234). It was commissioned by Pope Boniface VIII in 1296 and promulgated on March 3rd, 1298, embracing some 64 years of papal and conciliar legislation."
Church legislation = canonical law