Who was Alfonso Leon?

Alfonso Leon (1171–1230) was born in Castile, Leon, Castilla-Leon, Spain and died in Sarria, Lugo, Galicia, Spain. 2 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Alfonso?

Right now, 2 researchers on YourRoots have Alfonso in their trees. The ancestor migration map traces 2 generations of this lineage.

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Alfonso IX King of Leon 1171–1230

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 2 independent trees

Birth year and location consistent across 2 trees

Death year and location consistent across 2 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

2 researchers on YourRoots have Alfonso Leon in their family trees — each with their own records and documentation. Trace the migration path across 2 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 2 independent trees

Born 15 Aug 1171 · Castile, Leon, Castilla-Leon, Spain

Died 24 Sep 1230 · Sarria, Lugo, Galicia, Spain

Father King Of Leon Ferdinand Ii

Mother Urraca Alfonsez Deportugal

Spouse Berenguela Castile Leon

Children Alfonse Decastilla Demolina, Berengaria Alfonsez, Ferdinand Iii King Of Castile

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Researchers connected through Alfonso Leon 1171–1230

and 1 more tree owner connected with Alfonso Leon 1171–1230

Immediate Family

Parents

King Of Leon Ferdinand Ii

Urraca Alfonsez Deportugal

Spouse(s)

Berenguela Castile Leon

Children

Alfonse Decastilla Demolina

Berengaria Alfonsez

Ferdinand Iii King Of Castile

Biography

Alfonso IX King of Leon was born in 1171 in Castile, Leon, Castilla-Leon, Spain, the child of king of leon ferdinand ii and urraca alfonsez deportugal. Alfonso IX King of Leon married berenguela castile leon, and had children including alfonse decastilla demolina, berengaria alfonsez, ferdinand iii king of castile. Alfonso IX King of Leon passed away in 1230 in Sarria, Lugo, Galicia, Spain.

Sources

Life Timeline

1171

Birth of Alfonso IX King of Leon in Castile, Leon, Castilla-Leon, Spain

Birth

1230

Death of Alfonso IX King of Leon in Sarria, Lugo, Galicia, Spain

Death

Oldest Ancestor Line from Alfonso Leon

This ancestor line traces from Leon, Castilla-Leon, Spain (1137) to Castile, Leon, Castilla-Leon, Spain (1171) across 2 generations.

Direct Lineage

generations

Frequently Asked Questions

: Alfonso Leon (1171–1230) was born in Castile, Leon, Castilla-Leon, Spain and died in Sarria, Lugo, Galicia, Spain. 2 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, 2 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 2 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.