Margaret I, Countess of Flanders
Margaret I of Flanders( c. 1145- died 15 November 1194) was ruling countess of Flanders" suo jure" from 1191 to her death.
She was the daughter of Thierry, Count of Flanders, and Sibylla of Anjou, and the heiress of her childless brother, Philip of Flanders.
Baldwin VII, Count of Flanders
Baldwin VII of Flanders (1093 – 17 July 1119) was Count of Flanders from 1111 to 1119.
Baldwin was the son of Robert II, Count of Flanders and Clementia of Burgundy.
He succeeded his father as count when he died on 5 October 1111.
The inexperienced new count solicited the advice of his cousin, Charles the Good, who was several years older.
It was Baldwin who arranged the marriage of Charles to the heiress of the County of Amiens, Margaret of Clermont, in 1118.
In 1105, Baldwin married Hawise of Brittany (also called Havide), daughter of Alan IV, Duke of Brittany.
The groom was twelve, and the bride, only nine.
The union, in all probability, was never consummated.
They were divorced in 1110.
Baldwin did not remarry.
Baldwin and Hawise had no known issue.
He died after being wounded in September 1118 at the Battle of Bures-en-Bray, where he was fighting Henry I of England, on behalf of Louis VI of France.
When he was dying in 1119, Baldwin declared his cousin Charles his heir.
Charles became the new Count of Flanders after his death.
Baldwin V, Count of Flanders
Baldwin V of Flanders( c. 1012 – 1 September 1067) was Count of Flanders from 1035 until his death.
He was the son of Baldwin IV, Count of Flanders, who died in 1035.
Clementia of Burgundy
Clementia of Burgundy (c. 1078 – c. 1133) was a Countess of Flanders by marriage.
She acted as regent of Flanders from 1096 until 1100, while her husband was on crusade, and acted as the co-ruler of her son Baldwin VII from 1111 until 1119.
Margaret I, Countess of Burgundy
Margaret I( 1310 – 9 May 1382), was a ruling Countess Palatine of Burgundy and Artois from 1361 and 1382.
She was also countess of Flanders, Nevers and Rethel by marriage to Louis I, Count of Flanders, and regent of Flanders during the minority of her son Louis II, Count of Flanders in 1346.
Robert I, Count of Flanders
Robert I of Flanders( – 1093), known as" Robert the Frisian", was count of Flanders from 1071 to his death in 1093.
Henry of Flanders
Henry( 1176? – 11 June 1216) was the second emperor of the Latin Empire of Constantinople.
He was a younger son of Baldwin V, Count of Hainaut( later Baldwin VIII, count of Flanders), and Margaret I of Flanders, sister of Philip of Alsace, count of Flanders.
Baldwin II, Count of Hainaut
Baldwin II of Mons( 1056–1098?) was count of Hainaut from 1071 to his death.
He was the younger son of Baldwin VI, Count of Flanders and Richilde, Countess of Mons and Hainaut.
Arnulf I, Count of Flanders
Arnulf of Flanders( c. 890 – 27 March 965), called the Great, was the first Count of Flanders.
Richilde, Countess of Hainaut
Richilde, Countess of Mons and Hainaut( – 15 March 1086), was a ruling countess of Hainaut from c. 1050 until 1076, in co-regency with her husband Baldwin VI, Count of Flanders and son Baldwin II, Count of Hainaut.
She was also countess consort of Flanders by marriage to Baldwin VI, Count of Flanders.
She served as regent of Flanders during the minority of her son Arnulf III, Count of Flanders in 1070- 1071.

Question: What is the date of death of Baldwin Vii, Count Of Flanders's mother?
Answer: 1133