Margaret Jane McMahon 1840–1916
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
Compare a Public Tree Person with your own tree using Compare Tree.
- A 3 criteria (Strong)
- B 2 criteria (Medium)
- C 1 criteria (Basic)
- Record available
- Descendant's record available
- Star tree owner
2 researchers on YourRoots have Margaret McMahon 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: A — verified across 2 independent trees, with linked records
Researchers connected through Margaret McMahon 1840–1916
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and 1 more tree owner connected with Margaret McMahon 1840–1916
Immediate Family
Biography
The story of Margaret Jane McMahon began in 1840 in Aghnamullen, Co Monaghan, Ire. In 1861, Margaret Jane McMahon resided in Kilmarnock, Ayrshire, Scotland. Margaret Jane McMahon married francis frank knox, and had children including agnes knox, ann knox, francis knox, henry m knox, james m knox, jane knox, margaret knox, martha k knox, mary f knox, robert e knox. Margaret Jane McMahon passed away in 1916 in Philadelphia, Philadelphia County, Pennsylvania, United States of America.
Sources
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1Census 1861 Scotland Census
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2Census 1870 United States Federal Census
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3Census 1881 Scotland Census
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4Immigration New York, U.S., Arriving Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957
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5Burial Records U.S., Find a Grave® Index, 1600s-Current
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6Baptism Records Ireland, Select Births and Baptisms
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7Marriage Records Ireland, Select Marriages
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8Record Pennsylvania, U.S., Death Certificates, 1906-1972
Life Timeline
Oldest Ancestor Line from Margaret McMahon
This ancestor line traces from Ulster, Northern Ireland (1785) to Clones, County Monaghan, Ireland (1811) across 2 generations.
Frequently Asked Questions
- Margaret McMahon (1840–1916) was born in Aghnamullen, Co Monaghan, Ire and died in Philadelphia, Philadelphia County, Pennsylvania, United States of America. 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 (A) based on cross-tree validation.
- Right now, 2 researchers on YourRoots have Margaret 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.
Margaret McMahon's Ancestors
Pedigree chart — 3 generations on record