Question: Cearl is the first Mercian king mentioned by which English monk at the monastery of St. Peter and its companion monastery of St. Paul in the Kingdom of Northumbria of the Angles?
Sentence (from "Cearl of Mercia"): Cearl (or Ceorl) was an early king of Mercia who ruled during the early part of the 7th century, until about 626.
Relevant evidence: No