Who was William Johnson?

William Johnson (1741–1818) was born in New City, Rockland, New York, United States and died in Charleston, South Carolina. 2 researchers on YourRoots have this ancestor in their family trees.

How many people are researching William?

Right now, 2 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.

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

William Johnson 1741–1818

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 William Johnson 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 2 independent trees, with linked records

Born 21 MAY 1741 · New City, Rockland, New York, United States

Died 21 Mar 1818 · Charleston, South Carolina

Father John Johnson

Mother Sarah Jane Haywood

Spouse Abigail Fowler

Children James Slidell Johnson

Records

U.S., Sons of the American … North America, Family Histories

Compare Tree

Researchers connected through William Johnson 1741–1818

and 1 more tree owner connected with William Johnson 1741–1818

Immediate Family

Parents

John Johnson

Sarah Jane Haywood

Spouse(s)

Abigail Fowler

Sarah Florence Nightengale

Children

James Slidell Johnson

Biography

William Johnson was born in 1741 in New City, Rockland, New York, United States, the child of john johnson and sarah jane haywood. William Johnson married abigail fowler, sarah florence nightengale, and had children including james slidell johnson. William Johnson passed away in 1818 in Charleston, South Carolina.

Sources

1

Record U.S., Sons of the American Revolution Membership Applications, 1889-1970
2

Record North America, Family Histories

Life Timeline

1741

Birth of William Johnson in New City, Rockland, New York, United States

Birth

1818

Death of William Johnson in Charleston, South Carolina

Death

Oldest Ancestor Line from William Johnson

This ancestor line traces from Haverhill, Essex, Massachusetts or New York City, New York (1711) to New City, Rockland, New York, United States (1741) across 2 generations.

Direct Lineage

generations

Frequently Asked Questions

: William Johnson (1741–1818) was born in New City, Rockland, New York, United States and died in Charleston, South Carolina. 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 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.