Mary Doerr (1715–1761) was born in Knopp-Labach,Pfalz,Bavaria and died in Lancaster, Lancaster, Pennsylvania, USA. 2 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Mary?

Right now, 2 researchers on YourRoots have Mary in their trees. The ancestor migration map traces 4 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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Mary Catrina Doerr 1715–1761

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 Mary Doerr in their family trees — each with their own records and documentation. Trace the migration path across 4 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 24 Feb 1715 · Knopp-Labach,Pfalz,Bavaria

Died 9 Apr 1761 · Lancaster, Lancaster, Pennsylvania, USA

Father Johann George Doerr

Mother Elizabeth H Doerr

Spouse Johanne Georg Marquard

Children Mary Magdelene Marguard

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Researchers connected through Mary Doerr 1715–1761

and 1 more tree owner connected with Mary Doerr 1715–1761

Immediate Family

Parents

Johann George Doerr

Elizabeth H Doerr

Spouse(s)

Johanne Georg Marquard

Children

Mary Magdelene Marguard

Biography

In 1715, Mary Catrina Doerr entered the world in Knopp-Labach,Pfalz,Bavaria, born to johann george doerr and elizabeth h doerr. Mary Catrina Doerr married johanne georg marquard, and had children including mary magdelene marguard. Mary Catrina Doerr passed away in 1761 in Lancaster, Lancaster, Pennsylvania, USA.

Sources

Life Timeline

1715

Birth of Mary Catrina Doerr in Knopp-Labach,Pfalz,Bavaria

Birth

1761

Death of Mary Catrina Doerr in Lancaster, Lancaster, Pennsylvania, USA

Death

Oldest Ancestor Line from Mary Doerr

This ancestor line traces from Affeltrangen, Thurgau, Schweiz (1637) to Knopp-Labach,Pfalz,Bavaria (1715) across 4 generations.

Direct Lineage

generations

Frequently Asked Questions

: Mary Doerr (1715–1761) was born in Knopp-Labach,Pfalz,Bavaria and died in Lancaster, Lancaster, Pennsylvania, 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 Mary 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 4 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.