Who was Mary Underdown?

Mary Underdown (1598–1678) was born in Thanet, Kent, England and died in Thanet, Kent, England. 6 researchers on YourRoots have this ancestor in their family trees.

How many people are researching Mary?

Right now, 6 researchers on YourRoots have Mary in their trees. The ancestor migration map traces 2 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.

How do I compare family trees?

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

Mary Martha Underdown 1598–1678

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 6 independent trees

Birth year and location consistent across 6 trees

Death year and location consistent across 6 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

6 researchers on YourRoots have Mary Underdown in their family trees — each with their own records and documentation. Trace the migration path across 2 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 6 independent trees

Born 17 Sep 1598 · Thanet, Kent, England

Died 19 Apr 1678 · Thanet, Kent, England

Father Vincent Underdown

Mother Phillis Estice Harry

Spouse John Tomlin (1600–1651)

Children Ann Martin, Ann Martin Tomlin, Cornelius Tomlin, Francis Tomlin, Geoffrey Tomlin, Hannah Tomlin, John Tomlin, Martha Rebecca Tomlin, Matthew Tomlin, Matthew Tomlin Tomlyn, Peter Tomlin, Stephen Tomlin, Susan Tomlin, Walter Tomlin

Siblings Ellen Underdown, Henry Underdown, Vincent Underdown

Records

England, Select Births and Christenings

Compare Tree

Researchers connected through Mary Underdown 1598–1678

and 5 more tree owners connected with Mary Underdown 1598–1678

Immediate Family

Parents

Spouse(s)

Children

Martha Rebecca Tomlin

Matthew Tomlin

Matthew Tomlin Tomlyn

Biography

The story of Mary Martha Underdown began in 1598 in Thanet, Kent, England. Mary Martha Underdown married john tomlin, martin tomlin, richard tomlin, and had children including ann martin, ann martin tomlin, cornelius tomlin, francis tomlin, geoffrey tomlin, hannah tomlin, john tomlin, martha rebecca tomlin, matthew tomlin, matthew tomlin tomlyn, peter tomlin, stephen tomlin, susan tomlin, walter tomlin. Mary Martha Underdown passed away in 1678 in Thanet, Kent, England.

Sources

1

Baptism Records England, Select Births and Christenings

Life Timeline

1598

Birth of Mary Martha Underdown in Thanet, Kent, England

Birth

1678

Death of Mary Martha Underdown in Thanet, Kent, England

Death

Oldest Ancestor Line from Mary Underdown

This ancestor line traces from St Lawrence, Thanet, Kent, England (1568) to Thanet, Kent, England (1598) across 2 generations.

Direct Lineage

generations

Frequently Asked Questions

: Mary Underdown (1598–1678) was born in Thanet, Kent, England and died in Thanet, Kent, England. 6 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, 6 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 2 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.