Date: About 0477 to about 0558
Location: Ireland
Surnames/tags: Ui_Briuin Maicne_Eócháda_Tírmchárnai

Contents 1 Biography 1.1 Father 1.2 Children 1.3 Clann Name: 1.4 Surmised SNP: 2 Research Notes 3 Sources 3.1 WikiTree:

Biography

Eochaid Tirmcharna mac Fergusso (died ca. 556)^[1] was the son of Fergus Mac Muiredach (abt.0460-abt.0500) and a king of Connacht from the Uí Briúin branch of the Connachta. Genealogically he is mentioned as the great-great grandson of Duach Galach Mac Brión (abt.0375-0425) a previous king.^[2]

After ruling Connacht for one year (556-557), his son Áed mac Eochaid Tirmcharna Profile succeeded him and ruled for 25 years.^[3]

Eochaid Tirmcharna was the 6th Christian King of Connacht and his son Aed, 9th King of Connacht^[4]

Father

• Fergus Mac Muiredach (abt.0460-abt.0500)
  • (NOTE: LNAB is 'mac' fathers first name).

Children

• Áed mac Eochaid Tirmcharna Profile

Clann Name:

• Uí Briúin Maicne Eócháda Tírmchárnai

Surmised SNP:

• R1b-FGC5939

Research Notes

The old genealogies and annals references to Mael Ruinaid Mor, the progenitor of the Ui Maelruanaid, as the son of Tadg mac Cathal Ua Conchobar, has been shown by recent DNA studies as not genetically possible. Therefore his descendants and the corresponding dates in which they lived are speculative. Data gathered by the Sons of Aodh FTDNA project^[5], the Dal Cuinn Group^[6], and Michael Rowley ^[7][8]suggest the Ui Maelruanaid are a separate branch of the Dal Cuinn Ui Briuin.

The date of birth for these early Irish are rarely given. The dates used for each individual is based on my system that uses 27 years per ‘generation’, 54 years between mutations. Since the date of death for many are approximations, any age at death over ~85 is adjusted one ‘generation’.

• Names and dates (when provided) are from Bart Jaski's Chart #60 ^[9] and "The Chronology of the Irish Annals" ^[10]
• Any unsourced DOB and DOD are based on Michael Rowley's Comparative Analysis of the Descendants and DNA of Conn Cétchathach Ceadcatha; are designated by 'SP'; and are purely speculative based on DNA data as of May, 2022.
• SNP data is also purely speculative using the same spreadsheet.

Sources

1. ↑ The Annals of Tigernach, index, Author: Unknown (488-1178) - celt ucc 16 Aug 2017 [1]
2. ↑ Eochaid Tirmcharna Wiki [2]
3. ↑ The Life of St. Patrick and His Place in History, John B. Bury [3]
4. ↑ Christian Kings of Connacht, Paul Walsh, Journal of the Galway Archaeological and Historical Society Vol. 17, No. 3/4 (1937), pp. 124-143 (24 pages)[4]
5. ↑ Sons of Aodh FTDNA project [5]
6. ↑ Dal Cuinn Group [6]
7. ↑ DNA/Genealogy Comparison by Michael Rowley [7]
8. ↑ R1b-FGC5939 Haplogroup Comparison [8]
9. ↑ Early Irish Kingship Succession by Jaski, Bart, Published by Four Courts Press, 2013, ISBN 1846824265 ISBN 9781846824265 [9]
10. ↑ Daniel P. McCarthy, Proceedings of the Royal Irish Academy: Archaeology, Culture, History, Literature © 1998 Royal Irish Academy [10]

WikiTree:

• Historical Sources of Ireland
• Medieval Project - Ireland
• Kings of Magh Luirg
• Descent of Mael Ruanaid Mor
• Comparative Analysis of the Descendants and DNA of Conn Cétchathach Ceadcatha