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The PEDIGREE of
 Muirchertach (Murtagh) O'BRIEN
   aka Murtough II (180th MONARCH) of IRELAND; King of MUNSTER

Born:   ?   Died:  1119

HM George I's 18-Great Grandfather.       Lady Diana's 25-Great Grandfather.       PM Churchill's 24-Great Grandfather.       Geo Washington's 20-Great Grandfather.       Poss. Agnes Harris's 20-Great Uncle.
 Wife/Partner:         Dubchoblaig ingen DIARMIT
 Child:         Lafracoth (Lafracota) O'BRIEN of MUNSTER
______________________________________________________ 
/-- Lorcan MacLACHTNAI   +==&=> [ 157 ,,BD,&]
/-- Cennetig MacLORCAIN (King) of THOMOND (MUMHAN)
/-- Brian (Boroimhe Boruma) BORU (MacCENNETIG)
/  \-- Be Bind (Urchada) ingen AURCHADA   +==&=> [ 173 ,,BD,&]
/-- Teige (Terence) O'BRIEN  (979? - 1023?)
| \-- Eachraidh nic CEARBHALL   +====> [ 2]
/   | or: poss. Gormflaith LEINSTER, q.v.
/-- Toirrdelbach (Tirdelvagh; I) O'BRIEN  (1009 - 1086)
| \   /-- Lorcan MacMAEL MUAID   +==&=> [ 149 ,,BD,&]
| | /-- Gilla Brigte (Brighid) (MacLORCAN) O'MULLOY
/  \-- Mor ingen GILLA
- Muirchertach (Murtagh) O'BRIEN
\   /-- Gilla Patraic MacDONNCHADA   +==&=> [ 173 ,,BD,&]
| /-- Tadg (Tadhg Teige) MacGILLA PATRAIC of OSSORY
| /  \-- Maelmuire of DUBLIN   +====> [ 202 ,,pt,&]
\-- Dirborgaill ingen TAIDG of OSSORY  (1008? - 1098?)
 
  His (poss.) Grandchildren:        (NN) MONTGOMERIE   ;   Alice de MONTGOMERY   ;   Philip MONTGOMERIE   ;   Marrio
 

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