YourRoots by Genomelink

Isabel DeClare 1226–1264

Public Tree Person

What is a Public Tree Person?

A Public Tree Person is an ancestor documented independently by multiple YourRoots tree owners. When several researchers' family histories converge on the same person, we publish a shared page that combines what they've documented.

Why this is a Public Tree Person

Full name consistent across 5 independent trees
Birth year and location consistent across 5 trees
Death year and location consistent across 5 trees

Compare a Public Tree Person with your own tree using Compare Tree.

B Reliability
B
Reliability Score: B
Medium — based on the source tree
Grade scale
  • A 3 criteria (Strong)
  • B 2 criteria (Medium)
  • C 1 criteria (Basic)
Verification checklist
  • Record available
  • Descendant's record available
  • Star tree owner

5 researchers on YourRoots have Isabel DeClare in their family trees — each with their own records and documentation. Trace the migration path across 4 generations. If this ancestor is in your tree too, you can compare what you've found and fill in the gaps together.

Last updated: July 22, 2026 · Reliability: B — verified across 5 independent trees

Born 2 Nov 1226 · Tewkesbury, Gloucestershire, England
Died 10 Jul 1264 · Cleveland, Yorkshire, Scotland
Father Gilbert Declare
Mother Isabel Marshall (1200–1240)
Spouse Robert Sir The Competitor De Bruce
Children Alosia Bruce, Bernard Bruce, Christiana Brus, Christine Brus, Constance Bruce, Elizabeth Bruce, Isabel Brus, Isabel Debrus, John Brus, Lady Mary Clarissa Baroness Flamstead De Bruce, Richard De Brus, Robert De Brus Bruce

Researchers connected through Isabel DeClare 1226–1264

and 4 more tree owners connected with Isabel DeClare 1226–1264

Biography

In 1226, Isabel DeClare entered the world in Tewkesbury, Gloucestershire, England, born to gilbert declare and isabel marshall. Isabel DeClare married robert sir the competitor de bruce, and had children including alosia bruce, bernard bruce, christiana brus, christine brus, constance bruce, elizabeth bruce, isabel brus, isabel debrus, john brus, lady mary clarissa baroness flamstead de bruce, richard de brus, robert de brus bruce. Isabel DeClare passed away in 1264 in Cleveland, Yorkshire, Scotland.

Sources

  1. 1
    Record American Genealogical-Biographical Index (AGBI)

  2. 2
    Record Pedigrees of Some of the Emperor Charlemagne's Descendants. Volume III

  3. 3
    Marriage Records U.S. and International Marriage Records, 1560-1900

  4. 4
    Record The book of the Agnews : James Agnew of Pennsylvania, U.S.A., his race, ancestry, and descendants

  5. 5
    Record The book of Wallace

Life Timeline

1226
Birth of Isabel DeClare in Tewkesbury, Gloucestershire, England
Birth
1264
Death of Isabel DeClare in Cleveland, Yorkshire, Scotland
Death

Oldest Ancestor Line from Isabel DeClare

This ancestor line traces from Marlborough, Wiltshire, , England (1109) to Tewkesbury, Gloucestershire, , England (1226) across 4 generations.

Direct Lineage
generations

Frequently Asked Questions

Isabel DeClare (1226–1264) was born in Tewkesbury, Gloucestershire, England and died in Cleveland, Yorkshire, Scotland. 5 researchers on YourRoots have this ancestor in their family trees, each with their own records. This page combines what they've independently documented and assigns a Reliability Score (B) based on cross-tree validation.
Right now, 5 researchers on YourRoots have Isabel in their trees. They're working independently, so connecting with them is a good way to cross-check your records and find things you might have missed. You can also explore the ancestor migration map that traces 4 generations of this lineage geographically.
It varies by researcher — some have census records, others have marriage certificates, parish registers, or family Bible entries. Scroll up to see exactly what each person has cited.
Use the "Compare Tree" button on any researcher's profile above. You can compare your tree side by side with theirs, see where your records overlap or differ, and collaborate to fill gaps.

Isabel DeClare's Ancestors

Pedigree chart — 3 generations on record

Self
Isabel DeClare PTP
1226–1264
Tewkesbury, Gloucestershire, England
Parents
Unknown
Isabel Marshall PTP
1200–1240
Pembrokeshire, Wales
Grandparents
Unknown
Unknown
William Marshall PTP
1277–1314
Hingham, Norfolk, England
Unknown

Isabel DeClare's Descendants

1.
ID
Isabel DeClare PTP 1226–1264