Cluny, Kiev, and a synod that removed a pope

Unknown Winchester artist, 971–984. From the Benedictional of St Æthelwold, a book of blessings.
Monks, a prince, and baptism

A pope removed, and the sacraments
No ecumenical council met here
A monk writes about a count’s holiness
Battles, kings, and a voyage beyond the church’s centers
How the Confessions judge these events
Can reform fix a corrupt office, and does a corrupt minister make Christ’s sacraments invalid?