Who was Evelyn Knowler?

Evelyn Knowler (1911–1997) was born in West Lancaster Twp, Keokuk, Iowa and died in Los Angeles, California. 2 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Evelyn?

Right now, 2 researchers on YourRoots have Evelyn in their trees. The ancestor migration map traces 12 generations of this lineage.

What records do they have for Evelyn?

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

How do I compare family trees?

Use Compare Tree on an available researcher profile to compare overlapping people and records.

Evelyn Claudine Knowler 1911–1997

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 Evelyn Knowler in their family trees — each with their own records and documentation. Trace the migration path across 12 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, with linked records

Born 17 Dec 1911 · West Lancaster Twp, Keokuk, Iowa

Died 17 Nov 1997 · Los Angeles, California

Father Fred Knowler

Mother Ona Mae Surber

Siblings Clela Knowler, Freida Irene Knowler

Records

Iowa, Births and Christenings Index, …

Compare Tree

Researchers connected through Evelyn Knowler 1911–1997

and 1 more tree owner connected with Evelyn Knowler 1911–1997

Immediate Family

Parents

Fred Knowler

Ona Mae Surber

Spouse(s)

No spouse recorded

Children

No children recorded

Biography

In 1911, Evelyn Claudine Knowler entered the world in West Lancaster Twp, Keokuk, Iowa, born to fred knowler and ona mae surber. Evelyn Claudine Knowler passed away in 1997 in Los Angeles, California.

Sources

1

Record Iowa, Births and Christenings Index, 1857-1947

Life Timeline

1911

Birth of Evelyn Claudine Knowler in West Lancaster Twp, Keokuk, Iowa

Birth

1997

Death of Evelyn Claudine Knowler in Los Angeles, California

Death

Oldest Ancestor Line from Evelyn Knowler

This ancestor line traces from Ebersheim, Bas-Rhin, Alsace, France (1575) to West Lancaster Twp, Keokuk, Iowa (1911) across 12 generations.

Direct Lineage

generations

Frequently Asked Questions

: Evelyn Knowler (1911–1997) was born in West Lancaster Twp, Keokuk, Iowa and died in Los Angeles, California. 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 Evelyn 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 12 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.