Ervin Koch (1864–1946) was born in Republic, Seneca, Ohio, USA and died in Oakland, Alameda, California, USA. 2 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Ervin?

Right now, 2 researchers on YourRoots have Ervin in their trees. The ancestor migration map traces 3 generations of this lineage.

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

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Ervin Harrison Koch 1864–1946

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.

C Reliability

Reliability Score: C

Basic — 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 Ervin Koch in their family trees — each with their own records and documentation. Trace the migration path across 3 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: C — verified across 2 independent trees

Born 20 Oct 1864 · Republic, Seneca, Ohio, USA

Died 19 Feb 1946 · Oakland, Alameda, California, USA

Father John Jacob Koch

Mother Lavina Koehler

Spouse Emma Lorena Lena Call

Children Omal Call Koch

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Researchers connected through Ervin Koch 1864–1946

and 1 more tree owner connected with Ervin Koch 1864–1946

Immediate Family

Parents

John Jacob Koch

Lavina Koehler

Spouse(s)

Emma Lorena Lena Call

Children

Omal Call Koch

Biography

Ervin Harrison Koch was born in 1864 in Republic, Seneca, Ohio, USA, the child of john jacob koch and lavina koehler. Ervin Harrison Koch married emma lorena lena call, and had children including omal call koch. Ervin Harrison Koch passed away in 1946 in Oakland, Alameda, California, USA.

Sources

Life Timeline

1864

Birth of Ervin Harrison Koch in Republic, Seneca, Ohio, USA

Birth

1946

Death of Ervin Harrison Koch in Oakland, Alameda, California, USA

Death

Oldest Ancestor Line from Ervin Koch

This ancestor line traces from Lehigh, Northampton, Pennsylvania, United States (1799) to Republic, Seneca, Ohio, USA (1864) across 3 generations.

Direct Lineage

generations

Frequently Asked Questions

: Ervin Koch (1864–1946) was born in Republic, Seneca, Ohio, USA and died in Oakland, Alameda, California, USA. 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 (C) based on cross-tree validation.
: Right now, 2 researchers on YourRoots have Ervin 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 3 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.