Who was William Underwood?

William Underwood (1609–1697) was born in Assington, Suffolk, England and died in Chelmsford, Middlesex, Massachusetts, USA. 11 researchers on YourRoots have this ancestor in their family trees.

How many people are researching William?

Right now, 11 researchers on YourRoots have William in their trees. The ancestor migration map traces 2 generations of this lineage.

What records do they have for William?

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.

William Underwood 1609–1697

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 11 independent trees

Birth year and location consistent across 11 trees

Death year and location consistent across 11 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

11 researchers on YourRoots have William Underwood 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: August 25, 2026 · Reliability: B — verified across 11 independent trees

Born 09 Apr 1609 · Assington, Suffolk, England

Died 12 Aug 1697 · Chelmsford, Middlesex, Massachusetts, USA

Father Sir John Joseph 1 Underwood Grocer

Mother Rachel Ann Edwards

Siblings 1 Rachel Twin Underwood, 1 Rachel Twin To Martin Underwood Underwood, 2 Rachel Underwood, Ann Underwood, Benjamin Underwood, Elizabeth Underwood, George Underwood, Joane Underwood, John Thomas Underwood, John Underwood 1621, John Underwood Ii, Joseph Churchill Underwood, Joseph Churchill Underwood Emigrant, Joseph Underwood, Joseph Underwood Emigrant, Lady Sarah Underwood, Martin Underwood Twin, Martin Martine Martaine Underwood, Martin Underwood, Martin Underwood Emigrant, Mary Gershom, Mary Underwood, Rachel Underwood, Rachell Underwood, Rebecca Underwood, Samuel Thomas Underwood, Sarah Underwood, Thomas I Underwood, Thomas Underwood, Thomas Underwood Unproven, William Underwood, William Underwood Sir

Records

Geneanet Community Trees Index Global, Find a Grave® Index … Middlesex County, Massachusetts Probate Index, … U.S. and Canada, Passenger and …

Compare Tree

Researchers connected through William Underwood 1609–1697

and 10 more tree owners connected with William Underwood 1609–1697

Immediate Family

Parents

Sir John Joseph 1 Underwood Grocer

Rachel Ann Edwards

Spouse(s)

No spouse recorded

Children

No children recorded

Biography

The story of William Underwood began in 1609 in Assington, Suffolk, England. William Underwood passed away in 1697 in Chelmsford, Middlesex, Massachusetts, USA.

Sources

1

Record Geneanet Community Trees Index
2

Burial Records Global, Find a Grave® Index for Burials at Sea and other Select Burial Locations, 1300s-Current
3

Probate/Wills Middlesex County, Massachusetts Probate Index, 1648-1870
4

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

Life Timeline

1609

Birth of William Underwood in Assington, Suffolk, England

Birth

1697

Death of William Underwood in Chelmsford, Middlesex, Massachusetts, USA

Death

Oldest Ancestor Line from William Underwood

This ancestor line traces from Sandy, Bedfordshire, England, United Kingdom (1589) to Assington, Suffolk, England (1609) across 2 generations.

Direct Lineage

generations

Frequently Asked Questions

: William Underwood (1609–1697) was born in Assington, Suffolk, England and died in Chelmsford, Middlesex, Massachusetts, USA. 11 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, 11 researchers on YourRoots have William 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.