Baldwin III, Count of Flanders
|Count of Flanders|
|Co-reign||958 – 962|
|Noble family||House of Flanders|
|Spouse(s)||Matilda of Saxony|
|Mother||Adele of Vermandois|
Baldwin III was born c. 940. He was the son of Count Arnulf I of Flanders and his second wife, Adele of Vermandois (c. 915 – 969). Shortly before 961, Baldwin married Matilda (died 1008), daughter of Duke Hermann Billung of Saxony. They had a son, Arnulf (c. 960 – 987).
Arnulf I made Baldwin III co-ruler of Flanders in 958. During his short rule, Baldwin was responsible for establishing the wool manufacturing industry at Ghent and markets at other towns in Flanders. Baldwin III died of smallpox on 1 January 962, after a campaign against the Normans. After Baldwin's death, Arnulf I arranged for King Lothair of France to become the guardian of Baldwin's son, Arnulf II, who succeeded Arnulf I.
- Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band II (Verlag von J. A. Stargardt, Marburg, Germany, 1984), Tafel 5
- Detlev Schwennicke, Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge, Band I (Verlag von J. A. Stargardt, Marburg, Germany, 1980), Tafel 8
- Tracy Borman, Queen of the Conqueror: The Life of Matilda, Wife of William I (Bantam Books, New York, 2011), p. 3
- The Annals of Flodoard of Reims, 916-966, Ed. & Trans. Steven Fanning & Bernard S. Bachrach (University of Toronto Press, CA, 2004) 44F & n. 219