Who was the Duke of Zhou?
The Duke of Zhou, personal name, Ji Dan, (d.1105 b.c.e.) was King Wen’s fourth son. The Zhou overthrew the Shang and established the Zhou dynasty. The Duke of Zhou ruled for a period as regent. A learned man interested in music, poetry, and science (one story tells how he gave a compass to a delegation from what is now Vietnam), he wrote the commentary that accompanies each line.