Murchadh Thomas 4th Lord of Inchiquin O'brien 1562–1597
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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.
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- A 3 criteria (Strong)
- B 2 criteria (Medium)
- C 1 criteria (Basic)
- Record available
- Descendant's record available
- Star tree owner
4 researchers on YourRoots have Murchadh O'brien in their family trees — each with their own records and documentation. Trace the migration path across 5 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 4 independent trees, with linked records
Researchers connected through Murchadh O'brien 1562–1597
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and 3 more tree owners connected with Murchadh O'brien 1562–1597
Immediate Family
Biography
In 1562, Murchadh Thomas 4th Lord of Inchiquin O'brien entered the world in Lismullen, Meath, Ireland, born to murrough mcdermot o brien 3rd baron inchiquin and margret glynn cusack. Murchadh Thomas 4th Lord of Inchiquin O'brien married mabel nugent, and had children including dermot diarmaid o brien 5th baron inchiquin. Murchadh Thomas 4th Lord of Inchiquin O'brien passed away in 1597 in Mitchelstown, Cork, Ireland.
Sources
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1Record Netherlands, GenealogieOnline Trees Index
Life Timeline
Oldest Ancestor Line from Murchadh O'brien
This ancestor line traces from Castletown, Laois, Ireland (1472) to Lismullen, Meath, Ireland (1562) across 5 generations.
Frequently Asked Questions
- Murchadh O'brien (1562–1597) was born in Lismullen, Meath, Ireland and died in Mitchelstown, Cork, Ireland. 4 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, 4 researchers on YourRoots have Murchadh 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 5 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.
Murchadh O'brien's Ancestors
Pedigree chart — 3 generations on record