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William de Clare 1228–1258

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 3 independent trees
Birth year and location consistent across 3 trees
Death year and location consistent across 3 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

3 researchers on YourRoots have William Clare in their family trees — each with their own records and documentation. Trace the migration path across 8 generations. If this ancestor is in your tree too, you can compare what you've found and fill in the gaps together.

Last updated: August 25, 2026 · Reliability: B — verified across 3 independent trees

Born 18 May 1228 · Gloucestershire, England
Died 23 Jul 1258 · Retherford,,Gloucestershire,England
Father Gilbert Iii Magna Charta Baron 4Th Earl Of Hertford 5Th Earl Of Gloucester De Clare
Mother Isabel Of Pembroke De Marshall
Siblings Adeliza De Clare, Agnes Rose Declare, Avice Avicia Lady De Clare, Gilbert De Clare, Isabel Gloucester And Hertford De Clare, Richard Iv 6Th Earl Of Hertford 2Nd Earl Of Gloucester De Clare, Susan De Declare
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Researchers connected through William Clare 1228–1258

and 2 more tree owners connected with William Clare 1228–1258

Immediate Family

Spouse(s)
No spouse recorded
Children
No children recorded

Biography

The story of William de Clare began in 1228 in Gloucestershire, England. William de Clare passed away in 1258 in Retherford,Gloucestershire,England.

Sources

Life Timeline

1228
Birth of William de Clare in Gloucestershire, England
Birth
1258
Death of William de Clare in Retherford,Gloucestershire,England
Death

Oldest Ancestor Line from William Clare

This ancestor line traces from Avalgu, Germany (n/a) to Gloucestershire, England (1228) across 8 generations.

Direct Lineage
generations

Frequently Asked Questions

William Clare (1228–1258) was born in Gloucestershire, England and died in Retherford,,Gloucestershire,England. 3 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, 3 researchers on YourRoots have William 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 8 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.

Related Records

Gilbert Iii Magna Charta Baron 4Th Earl Of Hertford 5Th Earl Of Gloucester De Clare
Father
Isabel Of Pembroke De Marshall
Mother

William Clare's Ancestors

Pedigree chart — 3 generations on record

Self
William de Clare PTP
1228–1258
Gloucestershire, England
Parents
Unknown
Unknown
Grandparents
Unknown
Unknown
Unknown
Unknown

William Clare's Descendants

1.
WC
William de Clare PTP 1228–1258