Who was Alfonso Castile?

Alfonso Castile (1221–1284) was born in Toledo, Castilla-La Mancha, Spain and died in Seville, Andalucia, Spain. 9 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Alfonso?

Right now, 9 researchers on YourRoots have Alfonso in their trees. The ancestor migration map traces 5 generations of this lineage.

What records do they have for Alfonso?

Records vary by researcher and can include census, vital, parish, cemetery, and family sources.

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Alfonso X Castile 1221–1284

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 9 independent trees

Birth year and location consistent across 9 trees

Death year and location consistent across 9 trees

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

B Reliability

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

9 researchers on YourRoots have Alfonso Castile in their family trees — each with their own records and documentation. Trace the migration path across 5 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 9 independent trees

Born 23 Nov 1221 · Toledo, Castilla-La Mancha, Spain

Died 4 Apr 1284 · Seville, Andalucia, Spain

Father Ferdinand Iii King Of Spain Castile

Mother Johanna Dedammartin Deponthieu

Siblings Berenguela Of Castile, Edward Ii England, Eleanor Princess Of Castille Plantagenet, Eleanor Margaret Defiennes, Enrique Of Castile, Fadrique Of Castile, Felipe Of Castile, Fernando Decastile Ct Deaumale, Fernando Fernandez, Infanta Berenguela, Juan Of Castile, Juan Sednor Demarchena, Leonore Of Castile, Luis Decastile Sn Demarchenza, Manuel Fernandez Castile And Leon, Maria Of Castile

Records

US & British Isle, Joseph …

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Researchers connected through Alfonso Castile 1221–1284

and 8 more tree owners connected with Alfonso Castile 1221–1284

Immediate Family

Parents

Ferdinand Iii King Of Spain Castile

Johanna Dedammartin Deponthieu

Spouse(s)

No spouse recorded

Children

No children recorded

Biography

Alfonso X Castile was born in 1221 in Toledo, Castilla-La Mancha, Spain, the child of ferdinand iii king of spain castile and johanna dedammartin deponthieu. Alfonso X Castile passed away in 1284 in Seville, Andalucia, Spain.

Sources

1

Record US & British Isle, Joseph Thomas Biographical Dictionary: 1890

Life Timeline

1221

Birth of Alfonso X Castile in Toledo, Castilla-La Mancha, Spain

Birth

1284

Death of Alfonso X Castile in Seville, Andalucia, Spain

Death

Oldest Ancestor Line from Alfonso Castile

This ancestor line traces from Toledo, Toledo, Castilla-La Mancha, Spain (1105) to Toledo, Castilla-La Mancha, Spain (1221) across 5 generations.

Direct Lineage

generations

Frequently Asked Questions

: Alfonso Castile (1221–1284) was born in Toledo, Castilla-La Mancha, Spain and died in Seville, Andalucia, Spain. 9 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, 9 researchers on YourRoots have Alfonso 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 5 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.