YourRoots by Genomelink
banner

Sign up to explore more

Create a free account to navigate family trees, view ancestors, and discover connections.

Sir Donough Donat Deacauth O'Brien 1642–1717 – Genealogical Records

Birth Date: 1642

Birth Location: Lemeneagh & Dromoland, County Clare, Ireland

Death Date: 17 Nov 1717

Death Location: Dromoland Castle, Dromoland, County Clare, Ireland

Father: Sir O'Brien

Mother: Maire McMahon

Spouse(s): Elizabeth Deanne

Children(s): Elizabeth Deachlauth

Sir Donough Donat Deacauth O'Brien was born in 1642 in Lemeneagh & Dromoland, County Clare, Ireland, the child of Sir Conor Cornelius O Brien And Maire Rua Mcmahon. Sir Donough Donat Deacauth O'Brien married Elizabeth Deanne, and had children including Elizabeth Deachlauth. Sir Donough Donat Deacauth O'Brien passed away in 1717 in Dromoland Castle, Dromoland, County Clare, Ireland.

Find more search results for Sir O'Brien
SO

Reliability Score

This score reflects the reliability of the source family tree. A high rating indicates a trustworthy source with strong data consistency.

Reliability Score:
C
Criteria:
  • A 3 criteria (Strong)
  • B 2 criteria (Medium)
  • C 1 criteria (Basic)
  • N/A 0 criteria (Insufficient)

This tree's reliability score:

  • Record available
  • Descendant's record available
  • Star tree owner

Biography

  • Sir Donough Donat Deacauth O'Brien was born in 1642 in Lemeneagh & Dromoland, County Clare, Ireland, the child of Sir Conor Cornelius O Brien And Maire Rua Mcmahon.
  • Sir Donough Donat Deacauth O'Brien married Elizabeth Deanne, and had children including Elizabeth Deachlauth.
  • Sir Donough Donat Deacauth O'Brien passed away in 1717 in Dromoland Castle, Dromoland, County Clare, Ireland.

Immediate Family

Parents

Sir O'Brien
1617–1703
Birth Location: Dromoland Castle, Dromoland, County Clare, Ireland.
SO
Maire McMahon
1615–1686
Birth Location: Inchequin, Clare, Ireland
MM

Spouses(s)

Elizabeth Deanne
1650–1722
Birth Location: Ravensthorpe, Northamptonshire, England
ED

Children(s)

Elizabeth Deachlauth
1660–1706
Birth Location: Lisheenboy, Tipperary, Ireland
ED

Sir O'Brien's Ancestors

Self
Sir O'Brien
1642–1717
Birth Place: Lemeneagh & Dromoland, County Clare, Ireland
Parents
Sir Conor Cornelius O'Brien
1617–1703
Dromoland Castle, Dromoland, County Clare, Ireland.
Maire (Rua) McMahon
1615–1686
Inchequin, Clare, Ireland
Grandparents
Sir (Donough MacConor Lemeneagh) OBrien
1595–1634
Dough, Cork, Ireland
Sir (Turlough Ruadh) MacMahon-Clonderlaw
1566–1629
Clonderlaw, Thomond, County Clare, Ireland
Mary O'Brien
1580–1640
Clare, Ireland
Great-Grandparents
Conor Brien
1582–1603
Lord IV
1540–1594
Conor OBrien
1534–1581
2nd-Great-Grandparents
Donough OBrien
1519–1582
Slaney MacNamara
1523–1582
Murtagh MacMahon
1515–1545

Sir O'Brien's Descendants

1.
SO
Sir (Donough Donat Deacauth) O'Brien (1642–17 Nov 1717) m. Elizabeth Deanne (1650–15 Apr 1722)
  1. 1. Elizabeth Deachlauth 1660–1706 m. Daniel (Anthony) O'Carroll 1658–1724
    1. 1. Joanna O'Carroll 1675–1763 m. Joshua Howard 1659–1738
      1. 1. Mary Smith 1713–1727 m. Samuel (Henry) Howard 1711–1774
        1. 1. Ignatius Howard 1725–1774 m. Sarah Sims 1726–1789
        2. 2. Elizabeth Howard 1724–

Sir O'Brien's Timeline

2 Records

1642
1642
Birth of Sir Donough Donat Deacauth O'Brien in Lemeneagh & Dromoland, County Clare, Ireland
Lemeneagh & Dromoland, County Clare, Ireland
1717
17 Nov 1717
Age 75
Death of Sir Donough Donat Deacauth O'Brien in Dromoland Castle, Dromoland, County Clare, Ireland
Dromoland Castle, Dromoland, County Clare, Ireland

Sources

    Genealogy Event 1
    Event Type: Birth
    Event Date: 1642
    Event Place: Lemeneagh & Dromoland, County Clare, Ireland

    Genealogy Event 2
    Event Type: Title
    Event Place: Ireland

    Genealogy Event 3
    Event Type: Death
    Event Date: 17 Nov 1717
    Event Place: Dromoland Castle, Dromoland, County Clare, Ireland
Find more search results for Sir O'Brien

About YourRoots

Family Tree Map

Explore your family tree geographically

Import your GEDCOM file to transform your family tree into an interactive global map. See your roots laid out visually and understand your true geographic heritage.

Powerful tools like "Trace Back To Me" instantly map your family's migration paths from a chosen ancestor all the way back to you.

LEARN MORE
AI Genealogy Research

Discover ancestors beyond "end-of-line" automatically

Import your family tree and let AI expand it for you. AI Ancestor Finder scans "end-of-line" ancestors to uncover their parents across hundreds of family lines at once. AI Deep Research analyzes selected ancestors and family clusters, suggesting relevant records and next steps.

Turn on Auto Research Mode to get new discoveries daily or weekly, so your tree keeps growing even while you're away.

LEARN MORE
DNA Match

Find more DNA matches across all DNA tests

Combine your DNA data with your family tree to unlock the full power of YourRoots DNA Match. Connect with relatives across major testing services — Ancestry, 23andMe, MyHeritage, and more.

View your matches' maps and trees to identify shared ancestors, and soon you'll be able to add them directly to your own tree and map.

LEARN MORE
Ancestry Reports

Ancestry DNA analysis that goes deeper than others

Unlock exclusive reports that reveal your deeper origins.

  • Deep Ancestry Report — Analyze 130+ ethnicities, sub-regions, and 1,800+ communities in one detailed view.
  • Global & Native American Reports — Developed with Stanford researchers to uncover hidden ancestries across all 22 chromosomes.
  • Ancient DNA Series — Compare your DNA with 1,000+ ancient genomes from Viking, Celtic, and early American civilizations.
LEARN MORE