Mary Long (1799–1829) was born in Washington, Kentucky, United States and died in Morgan, Illinois, United States. 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 15 generations of this lineage.

What records do they have for Mary?

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

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

Mary "Polly" Long 1799–1829

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 Mary Long in their family trees — each with their own records and documentation. Trace the migration path across 15 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 12 Oct 1799 · Washington, Kentucky, United States

Died 25 Apr 1829 · Morgan, Illinois, United States

Father James Rev Long

Mother Priscilla Lasswell

Siblings Edward Long, Edward P Long, Eleanor Long, Elizabeth Long, James Long, John B Long, Peter Long, Sarah Sallie Long, Thomas Long, Virginia Jane Jennie Long

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Researchers connected through Mary Long 1799–1829

and 1 more tree owner connected with Mary Long 1799–1829

Immediate Family

Parents

James Rev Long

Priscilla Lasswell

Spouse(s)

No spouse recorded

Children

No children recorded

Biography

In 1799, Mary "Polly" Long entered the world in Washington, Kentucky, United States, born to james rev long and priscilla lasswell. Mary "Polly" Long passed away in 1829 in Morgan, Illinois, United States.

Sources

Life Timeline

1799

Birth of Mary "Polly" Long in Washington, Kentucky, United States

Birth

1829

Death of Mary "Polly" Long in Morgan, Illinois, United States

Death

Oldest Ancestor Line from Mary Long

This ancestor line traces from Faumont, Glamorganshire, Wales (1375) to Washington, Kentucky, United States (1799) across 15 generations.

Direct Lineage

generations

Frequently Asked Questions

: Mary Long (1799–1829) was born in Washington, Kentucky, United States and died in Morgan, Illinois, United States. 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 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 15 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.