source: Shortly after the death of his wife, Bavo decided to reform himself upon hearing a sermon preached by a monk, Saint Amand.
target: Shortly after the death of his wife, Bavo heard Saint Amand, a monk, preach a sermon. This caused Bavo to decide to reform himself.
references: Shortly after the death of his wife, Bavo heard Saint Amand, a monk, preach a sermon. This caused Bavo to decide to reform himself.