Who was Thomas Simpson?

Thomas Simpson (1739–1833) was born in St George Parish, Baltimore, Maryland, United States and died in Post Oak, Johnson County, Missouri, USA (@@ son William's house.). 3 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Thomas?

Right now, 3 researchers on YourRoots have Thomas in their trees. The ancestor migration map traces 10 generations of this lineage.

What records do they have for Thomas?

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.

Thomas Calvin Simpson 1739–1833

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 3 independent trees

Birth year and location consistent across 3 trees

Death year and location consistent across 3 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

3 researchers on YourRoots have Thomas Simpson in their family trees — each with their own records and documentation. Trace the migration path across 10 generations. If this ancestor is in your tree too, you can compare what you've found and fill in the gaps together.

Last updated: August 25, 2026 · Reliability: B — verified across 3 independent trees

Born 23 Sep 1739 · St George Parish, Baltimore, Maryland, United States

Died 21 Sep 1833 · Post Oak, Johnson County, Missouri, USA (@@ son William's house.)

Father Richard Simpson Only Child Sargent

Mother Elizabeth Reece

Spouse Mary Knight

Children David Simpson, Elizabeth Simpson, James Simpson, Nathaniel Simpson, Peter Ryan Simpson, Richard Simpson, Sarah Simpson, Senah Simpson

Siblings Eleanor Simpson, Elizabeth Simpson, Jane Simpson, Nathaniel Simpson, Richard Simpson Jr, Sarah Elizabeth Simpson Thomas 1739 Simpson S Sister Knight

Records

1790 United States Federal Census U.S. and Canada, Passenger and … U.S. and International Marriage Records, … Iowa, U.S., Select Marriages Index

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Researchers connected through Thomas Simpson 1739–1833

and 2 more tree owners connected with Thomas Simpson 1739–1833

Immediate Family

Parents

Richard Simpson Only Child Sargent

Spouse(s)

Children

Biography

The story of Thomas Calvin Simpson began in 1739 in St George Parish, Baltimore, Maryland, United States. Thomas Calvin Simpson married mary knight, and had children including david simpson, elizabeth simpson, james simpson, nathaniel simpson, peter ryan simpson, richard simpson, sarah simpson, senah simpson. Thomas Calvin Simpson passed away in 1833 in Post Oak, Johnson County, Missouri, USA (@@ son William's house.).

Sources

1

Census 1790 United States Federal Census
2

Immigration U.S. and Canada, Passenger and Immigration Lists Index, 1500s-1900s
3

Marriage Records U.S. and International Marriage Records, 1560-1900
4

Marriage Records Iowa, U.S., Select Marriages Index

Life Timeline

1739

Birth of Thomas Calvin Simpson in St George Parish, Baltimore, Maryland, United States

Birth

1833

Death of Thomas Calvin Simpson in Post Oak, Johnson County, Missouri, USA (@@ son William's house.)

Death

Oldest Ancestor Line from Thomas Simpson

This ancestor line traces from Benenden, Kent, England (1475) to St George Parish, Baltimore, Maryland, United States (1739) across 10 generations.

Direct Lineage

generations

Frequently Asked Questions

: Thomas Simpson (1739–1833) was born in St George Parish, Baltimore, Maryland, United States and died in Post Oak, Johnson County, Missouri, USA (@@ son William's house.). 3 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, 3 researchers on YourRoots have Thomas 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 10 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.