GFG18
Guthrie Genealogy
Guthrie Family Group 18
The Guthries of Mondooey
Raymoghy Parish · County Donegal · Ireland
A Donegal farming family, closely matching Guthrie cousins, and DNA clues reaching beyond the surname. Help us discover who came before William and Mary.
Open the GFG18 Research Tree →Origin Theories & Open Questions
These leads are worth exploring. A useful theory gives us something to investigate; the records and DNA must establish the connection.
Earlier generations · The local search
Who Were William’s Parents?
William is associated with Mondooey in Raymoghy Parish, but his parents and Mary’s maiden name have not been identified.
Earlier Guthrie households in the parish and neighboring townlands may hold the answer. Look for leases, marriage witnesses, wills, and records naming relatives rather than relying on a repeated first name.
Mary’s family could also help explain how this household came together.
Migration theory · A Scottish connection?
Did This Family Come from Scotland?
A Scottish connection, including a possible arrival during the Ulster Plantation period, remains a research possibility. No documented migration or specific Scottish parent family has yet been established for this line.
The Guthrie surname and the family’s Presbyterian associations offer context, but cannot identify an ancestor or a migration date. Family papers or matching descendants of an earlier line could help test the theory.
Big Y clue · Morris & Chaudoin
A Paternal Connection Beyond Guthrie
The tested Guthrie shares R-FTE47143 with two Morris testers and one Chaudoin tester. A third Morris tester connects at the parent branch, R-FTE46438.
Could an adoption, a surname change, or previously unrecognized parentage explain these connections? That is an open question. The results do not establish which surname came first or where a change occurred.
Tracing the matching families to their earliest proven ancestors gives us a practical next step.
Y111 clue · Fulton
Another Close Match to Follow
A Fulton match is only two steps away at 111 markers. The match’s reported earliest paternal ancestor is John Fulton, born about 1800.
This is a useful lead, but the available result is Y111. Big Y testing would help determine whether this line shares the more specific Guthrie–Morris–Chaudoin branch or connects further back.
Compare the Fulton family’s locations and records with the Mondooey family.
Most Wanted Documents
- William and Mary: a marriage entry, lease, will, or family record identifying their parents or Mary’s maiden name.
- The Mondooey households: tithe, valuation, church, and estate records connecting earlier and later occupants.
- The next generation: original records for Matilda Jane, James, and Nancy, with witnesses and informants included.
- Matching families: documented paternal lines and precise locations for the Morris, Chaudoin, and Fulton connections.
- Family papers: letters, Bible entries, photographs, or migration records connecting relatives who stayed in Ireland with those who left.
Explore the Mondooey Family
GFG18 currently has one established branch. These two households introduce the family; the branch page and Research Tree provide the fuller account.
Branch A · The earlier household
William Guthrie & Mary
William: born about 1780–1790
Mondooey · Raymoghy Parish
William was a farmer. His parents and Mary’s maiden name remain unknown. Their family includes Matilda Jane, James, and Nancy.
The daughters are recorded as unmarried. Their lives and records are part of the family story and may help identify relatives, neighbors, and household connections.
The next generation · Guthrie–Kilpatrick
James Guthrie & Anne Jane Kilpatrick
James: about 1828–1910
Mondooey Middle · County Donegal
James and Anne Jane married on 12 February 1863 at the Presbyterian Meeting House in Donaghmore. Their family included seven children.
Open the children’s names
- William Guthrie
- James Guthrie
- Thomas Guthrie
- Mary Guthrie
- Matilda Anne Guthrie
- Margaret Jane Guthrie
- Rebecca Guthrie
Descendants of every child can help build the record of this family. Direct male-line descendants of the sons are especially valuable for Y-DNA comparisons.
DNA Findings
Three Guthrie Profiles · An Exact Y111 Match
The match exports for BP76366 and B1139829 each list the other two Guthrie participants as exact matches across 111 markers. Together, they support a shared paternal line for all three men. Records are still needed to establish each father-to-son link.
| Kit | Test | Research contribution |
|---|---|---|
| BP76366 | Big Y-700 | Confirmed placement at R-FTE47143. |
| B1139829 | Y111 | Exact 111-marker match to BP76366. |
| 430562 | Y111 | Exact 111-marker match in both exports; listed on Branch A under James Guthrie and Anne Jane Kilpatrick. |
Participant roster: Branch A. DNA findings checked against the 1 October 2026 match exports, Big Y Block Tree, Haplogroup Story, and Match Time Tree.
Big Y Places the Line at R-FTE47143
Kit BP76366 now belongs to R-FTE47143, a more specific branch beneath R-FTE46438. The earlier designation remains part of its paternal ancestry.
R-FTE46438
Common ancestor estimated around 1400 CE
A separate Morris line
Reported ancestor: Patrick Morris, born about 1810 in Ireland; died 1878 in New York.
R-FTE47143
Common ancestor estimated around 1550 CE
One Guthrie · Two Morris · One Chaudoin
R-FTE47143 contains four Big Y testers: one Guthrie, two Morris, and one Chaudoin. GFG18 itself has three Guthrie participants, one with Big Y and two with Y111 results.
The estimate near 1550 CE concerns the shared ancestor of that mixed-surname branch. It does not date William Guthrie’s birth, identify the ancestor’s surname, or pinpoint an adoption or other surname change. These estimates have a range of uncertainty and can change with new results.
How to Read These Matches
Y111 compares 111 STR markers. A zero-step match means the compared marker values agree. It supports a paternal connection, but does not by itself tell us the number of generations to the common ancestor.
Big Y adds a more detailed SNP-based family tree. Sharing R-FTE47143 places the Guthrie, Morris, and Chaudoin testers on that particular paternal branch. Another Guthrie Big Y test could identify changes shared within the Guthrie family and help refine its placement.
Read STR distance alongside the Big Y tree. The Fulton match is two steps away at Y111. Within R-FTE47143, the Chaudoin match is five steps away, and the two Morris matches are five and ten steps away. Those different STR distances occur among men assigned to the same SNP branch.
Keep the Morris comparisons separate. The Morris tester reporting Patrick Morris (about 1810–1878) is eight steps away and connects at R-FTE46438. A further Morris match is also eight steps away, but has Y111 results only, so his more specific SNP placement remains unresolved.
A broad haplogroup is only a starting point. R-M269 and R-M222 describe much larger paternal families. Sharing one of those labels with another Guthrie Family Group does not establish a recent family connection.
The long Match Time Tree includes many older relationships. The most useful section for this question is the smaller branch containing Guthrie and the nearby Morris and Chaudoin lines.
Help Move the Research Forward
New participants · More family lines
Does Your Family Lead to Donegal?
We welcome additional Guthrie descendants, including families whose connection to Mondooey is still uncertain.
Y-DNA from men with an unbroken father-to-son Guthrie line can help identify additional branches. Share the tester’s ancestry from the tester back to the earliest proven Guthrie ancestor, with dates and spouses where known.
Targeted upgrades · Sharper comparisons
What Could Another Big Y Test Add?
A second Guthrie Big Y result—ideally from a descendant whose line separates as far back as the records allow—could help distinguish the Guthrie branch within this wider paternal family.
A Big Y result for the close Fulton match would answer a different question: where does that line belong on the same tree?
Contact Ann to discuss which comparison would be most useful. Funding or sponsorship may be available for selected tests.
Records, Family Trees & Autosomal Clues
Descendants through daughters and sons can contribute documents, family photographs, stories, and autosomal match information. DNA testing is not required to take part in Guthrie Genealogy.
If you have autosomal results, organize the relevant matches and their documented Guthrie ancestry. Shared DNA may come through another family, so treat a Guthrie surname match as a clue to investigate.
Use your testing company’s tools and help center, compare notes with cousins, and bring specific questions to Ann when you need help interpreting what you have gathered.
For the local paper trail: begin with the family’s original marriage and death records, then compare church registers, tithe and valuation entries, and estate records. Keep the townland, witnesses, and informants with each entry.