Michael Matthew Groat PhD's Genealogical Database
Individuals: 97,713 Families: 61,838
Gedcom Last Modified: December 14, 2025 00:59:10
Constance de Bretagne
- Preferred Name: Constance de Bretagne[1] [2]
- Gender: F
- FSID: GF3P-TXJ
- Birth: ABT 1118 in Bretagne, France at LATI: N8.3185 LONG: E2.9377
- Death: ABT 1178 in Treguier, Cotes Du Nord, , France at LATI: N8.7857 LONG: E3.2307
- Notes:
=== Life Sketch ===
[CONSTANCE de Bretagne (-1148). Constance is shown in Europäische Stammtafeln as the younger daughter of Duke Conan III, died 1148[239]. The primary source which confirms her parentage and marriage has not yet been identified. The information has not therefore been verified.
m as his first wife, GEOFFROY de Mayenne, son of JUHEL Seigneur de Mayenne & his wife Clémence de Ponthieu (-18 Feb or 25 Jul 1169).]
BIO
BIO: from http://fmg.ac/Projects/MedLands/BRITTANY.htm#ConstanceBretagnedied1148 as of 8/12/2016
CONSTANCE de Bretagne (-1148). The primary source which confirms her parentage and marriage has not
=== Name Suffix: [VISCOUNTESS OF ===
Name Suffix: [VISCOUNTESS OF
Ancestral File Number: 9FTK-JV
=== !#552-V-2-T-75; ===
!#552-V-2-T-75;
=== Princess of Bretagne ===
Princess of Bretagne
Preferred Parents:
Father: Conan Duke of Brittany III, b. 1095 in Mortaigne Au Perche, Orne, Normandy, France d. 17 SEP 1148 in Bretagne, Pyrénées-Atlantiques, Aquitaine, France
Mother: Matilda fitzRoy Duchess of Brittany, b. 1091 in Bretagne, Indre, Centre, France d. AFT 1128 in Rouen, Normandie, France
Family 1: Geoffroi de Mayenne Seigneur of Mayenne III, b. ABT 1135 in Mayenne, Mayenne, Pays de la Loire d. 18 FEB 1169 in Mayenne, Mayenne, Pays de la Loire
- Mathilde de Mayenne, b. 1150 in Vitré-Est, Rennes, Ille-et-Vilaine, Bretagne, France d. 1223 in Mayenne, Pays de la Loire, France
- Clémence de Mayenne, b. 1160 in Mayenne, Mayenne, Pays de la Loire, France d. 1190 in Mayenne, Maine Pays De La Loire, France
Sources:
- Title: Legacy NFS Source: Constance DeBretagne -
Author: Ancestry Family Trees, Name: Online publication - Provo, UT, USA: Ancestry.com. Originaldata: Family Tree files submitted by Ancestry members.;, Ancestry.com, Page number: Ancestry Family Trees
Note: This information comes from 1 or more individual Ancestry Family Treefiles. This source citation points you to a current version of thosefiles. Note: The owners of these tree files may have removed orchanged information since this source citation was created.
This information comes from 1 or more individual Ancestry Family Treefiles. This source citation points you to a current version of thosefiles. Note: The owners of these tree files may have removed orchanged information since this source citation was created.
Page: Migrated from user-supplied source citation: urn:familysearch:source:3247302412
- Title: Foundation for Medieval Genealogy
Publication: Name: https://fmg.ac/Projects/MedLands/BRITTANY.htm#AlainIVdied1119B;
Note: [CONSTANCE de Bretagne (-1148). Constance is shown in Europäische Stammtafeln as the younger daughter of Duke Conan III, died 1148[239]. The primary source which confirms her parentage and marriage has not yet been identified. The information has not therefore been verified. m as his first wife, GEOFFROY de Mayenne, son of JUHEL Seigneur de Mayenne & his wife Clémence de Ponthieu (-18 Feb or 25 Jul 1169).]
Master Index
| Pedigree Chart
| Descendency Chart
Please send genealogical corrections, additions, or comments to Michael Matthew Groat PhD
Created by GIMMWebService Version 1.0.3 (Program Information), Copyright 2023 © Michael Groat
(Web design layout and pedigree indentation subroutine) Copyright 1996 © Randy Winch (gumby@edge.net) and Tim Doyle (tdoyle@doit.com)
(Internal GEDCOM data structures and GEDCOM file parsing) Copyright 2014-2021 © Giulio Genovese (giulio.genovese@gmail.com)
Like the program that you see? Any support is appreciated!
