Biography of Matilda Angus 6th Countess Angus 1222-1261
Around 1210 [her grandfather] Donnchad Angus 5th Earl Angus (age 40) died. His son [her father] Maol Choluim Angus 5th Earl Angus (age 20) succeeded 5th Earl Angus. Not clear why he has the same ordinal as his father?.
Around 1222 Matilda Angus 6th Countess Angus was born to Maol Choluim Angus 5th Earl Angus (age 32).
In 1242 [her father] Maol Choluim Angus 5th Earl Angus (age 52) died. His daughter Matilda Angus 6th Countess Angus (age 20) succeeded 6th Countess Angus.
In 1245 [her son] Gilbert Umfraville 7th Earl Angus was born to Gilbert Umfraville (age 50) and Matilda Angus 6th Countess Angus (age 23).
Before 12 Dec 1247 Richard de Dover Plantagenet (age 27) and Matilda Angus 6th Countess Angus (age 25) were married. She the daughter of Maol Choluim Angus 5th Earl Angus. They were fourth cousins. He a grandson of King John "Lackland" of England. 
In 1261 Matilda Angus 6th Countess Angus (age 39) died. Her son [her son] Gilbert Umfraville 7th Earl Angus (age 16) succeeded 7th Earl Angus.
On 09 Aug 1270 [her former husband] Richard de Dover Plantagenet (age 50) died in Carthage.
Gilbert Umfraville and Matilda Angus 6th Countess Angus were married. The difference in their ages was 27 years. She the daughter of Maol Choluim Angus 5th Earl Angus.
John Comyn Earl Angus and Matilda Angus 6th Countess Angus were married. She the daughter of Maol Choluim Angus 5th Earl Angus. He the son of William Comyn Earl Buchan and Sarah Fitzhugh.
[her daughter] Isabel Plantagenet Countess of Atholl was born to Richard de Dover Plantagenet and Matilda Angus 6th Countess Angus. She a great granddaughter of King John "Lackland" of England.
[her son] Richard Plantagenet was born to Richard de Dover Plantagenet and Matilda Angus 6th Countess Angus. He a great grandson of King John "Lackland" of England.
Kings Wessex: Great x 6 Grand Daughter of King Edmund "Ironside" I of England
Kings Scotland: Great x 4 Grand Daughter of Malcolm III King Scotland
Kings Franks: Great x 13 Grand Daughter of Louis "Pious" King Aquitaine I King Franks
Kings France: Great x 6 Grand Daughter of Robert "Pious" II King France
Great x 1 Grandfather: Gille Críst Angus 4th Earl Angus
GrandFather: Donnchad Angus 5th Earl Angus
Great x 4 Grandfather: Malcolm III King Scotland
Great x 3 Grandfather: King David I of Scotland
Great x 4 Grandmother: Margaret Wessex Queen Consort Scotland
Great x 2 Grandfather: Henry Dunkeld 3rd Earl Huntingdon 1st Earl of Northumbria
Great x 4 Grandfather: Waltheof Northumbria 1st Earl of Northampton 1st Earl Huntingdon
Great x 3 Grandmother: Maud Queen Consort Scotland
Great x 4 Grandmother: Judith Flanders Countess Huntingdon
Great x 1 Grandmother: Marjorie Dunkeld Countess Angus
Great x 4 Grandfather: William Warenne 1st Earl Surrey
Great x 3 Grandfather: William Warenne 2nd Earl Surrey
Great x 4 Grandmother: Gundred Countess of Surrey
Great x 2 Grandmother: Ada Warenne Countess Huntingdon and Northumbria
Great x 4 Grandfather: Hugh "Great" Capet
Great x 3 Grandmother: Elizabeth Capet Countess Leicester, Meulan and Surrey
Great x 4 Grandmother: Adelaide I Countess Vermandois
Father: Maol Choluim Angus 5th Earl Angus