YourRoots by Genomelink
banner

Sign up to explore more

Create a free account to navigate family trees, view ancestors, and discover connections.

Constance le Gros, Duchess of Brittany 1066–1090 – Genealogical Records

Birth Date: About 1066

Birth Location: Rouen, Seine-Maritime, Haute-Normandie, France

Death Date: 13 Aug 1090

Death Location: Brittany, France

Father: William England

Mother: Matilda England

Spouse(s): Alain Bretagne

Children(s): Conan Brittany

In 1066, Constance le Gros, Duchess of Brittany entered the world in Rouen, Seine-Maritime, Haute-Normandie, France, born to William The Conquerer Duke Of Normandy King Of England And Matilda Of Flanders Queen Consort Of England. Constance le Gros, Duchess of Brittany married Alain Iv Fergant The Younger De Cornouaille Duc De Bretagne, and had children including Conan Iii Duke Of Brittany. Constance le Gros, Duchess of Brittany passed away in 1090 in Brittany, France.

Find more search results for Constance Brittany
CB

Reliability Score

This score reflects the reliability of the source family tree. A high rating indicates a trustworthy source with strong data consistency.

Reliability Score:
B
Criteria:
  • A 3 criteria (Strong)
  • B 2 criteria (Medium)
  • C 1 criteria (Basic)
  • N/A 0 criteria (Insufficient)

This tree's reliability score:

  • Record available
  • Descendant's record available
  • Star tree owner

Biography

  • In 1066, Constance le Gros, Duchess of Brittany entered the world in Rouen, Seine-Maritime, Haute-Normandie, France, born to William The Conquerer Duke Of Normandy King Of England And Matilda Of Flanders Queen Consort Of England.
  • Constance le Gros, Duchess of Brittany married Alain Iv Fergant The Younger De Cornouaille Duc De Bretagne, and had children including Conan Iii Duke Of Brittany.
  • Constance le Gros, Duchess of Brittany passed away in 1090 in Brittany, France.

Immediate Family

Parents

William England
1028–1087
Birth Location: Falaise, Calvados, Basse-Normandie, France
WE
Matilda England
1031–1083
Birth Location: –
ME

Spouses(s)

Alain Bretagne
1067–1119
Birth Location: Chateaulin, Finistère, Bretagne, France
AB

Children(s)

Conan Brittany
1093–1148
Birth Location: Brittany, France
CB

Constance Brittany's Ancestors

Self
Constance Brittany
1066–1090
Birth Place: Rouen, Seine-Maritime, Haute-Normandie, France
Parents
William the Conquerer, Duke of Normandy, King of England
1028–1087
Falaise, Calvados, Basse-Normandie, France
Matilda (of Flanders, Queen Consort of) England
1031–1083
Grandparents
Robert (I, ‘The Magnificent’, 6th Duke of) Normandy
1000–1035
Herleva (de) Falaise
1003–1050
Baldwin (V Count of Flanders V, Earl of) Flanders
1012–1067
Arras, Flanders
Adela ((Alice) of France, Countess of) Flanders
1009–1079
France
Great-Grandparents
Richard Normandy
–1026
Judith Normandy
–1017
Fulbert Falaise
–1017
Doda Scotland
–1003
Baldwin Flanders
–1035
Ogive Flanders
–1030
Robert Franks
–1031
Constance Franks
–1032
2nd-Great-Grandparents
Thorgil Styrbjornsson
–1027
Thyra Norway
–1000
Malcolm Scotland
–1034
Hvarflad Scotland
Arnulf Flanders
Rozala Flanders
–1003

Constance Brittany's Descendants

1.
CB
Constance (le Gros, Duchess of) Brittany (About 1066–13 Aug 1090) m. Alain (IV ‘Fergant’ (the Younger) de Cornouaille, Duc de) Bretagne (About 1067–13 Oct 1119)
  1. 1. Conan (III, Duke of) Brittany 1093–1148

Constance Brittany's Timeline

2 Records

1066
About 1066
Birth of Constance le Gros, Duchess of Brittany in Rouen, Seine-Maritime, Haute-Normandie, France
Rouen, Seine-Maritime, Haute-Normandie, France
1090
13 Aug 1090
Age 24
Death of Constance le Gros, Duchess of Brittany in Brittany, France
Brittany, France

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: About 1066
    Event Place: Rouen, Seine-Maritime, Haute-Normandie, France

    Genealogy Event 2
    Event Type: Death
    Event Date: 13 Aug 1090
    Event Place: Brittany, France
Find more search results for Constance Brittany

About YourRoots

Family Tree Map

Explore your family tree geographically

Import your GEDCOM file to transform your family tree into an interactive global map. See your roots laid out visually and understand your true geographic heritage.

Powerful tools like "Trace Back To Me" instantly map your family's migration paths from a chosen ancestor all the way back to you.

LEARN MORE
AI Genealogy Research

Discover ancestors beyond "end-of-line" automatically

Import your family tree and let AI expand it for you. AI Ancestor Finder scans "end-of-line" ancestors to uncover their parents across hundreds of family lines at once. AI Deep Research analyzes selected ancestors and family clusters, suggesting relevant records and next steps.

Turn on Auto Research Mode to get new discoveries daily or weekly, so your tree keeps growing even while you're away.

LEARN MORE
DNA Match

Find more DNA matches across all DNA tests

Combine your DNA data with your family tree to unlock the full power of YourRoots DNA Match. Connect with relatives across major testing services — Ancestry, 23andMe, MyHeritage, and more.

View your matches' maps and trees to identify shared ancestors, and soon you'll be able to add them directly to your own tree and map.

LEARN MORE
Ancestry Reports

Ancestry DNA analysis that goes deeper than others

Unlock exclusive reports that reveal your deeper origins.

  • Deep Ancestry Report — Analyze 130+ ethnicities, sub-regions, and 1,800+ communities in one detailed view.
  • Global & Native American Reports — Developed with Stanford researchers to uncover hidden ancestries across all 22 chromosomes.
  • Ancient DNA Series — Compare your DNA with 1,000+ ancient genomes from Viking, Celtic, and early American civilizations.
LEARN MORE