Pepin of Herstal
After the Franks conquered Cologne in the fifth century, the Frankish mayors of the palace resided around the Capitoline hill. Pepin of Herstal, who effectively ruled the empire after becoming mayor of all three Frankish kingdoms in 687, lived in Cologne for a period of time. His wife Plectrude had a proprietary church built on the ruins of the capitol before her death. She was buried in this aisleless church.