Tags: Noble.
John III Marquis of Namur (d. 10 March 1429) was between 1418 and 1429 the last independent Marquis of Namur. He was the youngest son of William I Marquis of Namur and Catherine of Savoy († 1388) daughter of Louis II of Savoy baron of Vaud and Isabella of Châlon. When his father died in 1391 he inherited Wijnendale and Ronse.