World of HYDE
Discovering our Ancestors and their descendants to all parts of the world. Last updated 15th March 2026.
Family: Brian Barnabas Macdonnchadha O'Brien / Mary Anne Fermor (F44309)
m. 17 Jul 1615
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 | Donogh O'Brien, 4th Earl Of Thomond (1560-1624)
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 | Elisabeth Fitzgerald (1560-1617)
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| Lady Sarah O'Brien (1585-1644)  |
| Henry O'Brien (1588-1639) |
| Teige O'Brien (1594- ) |
| Mary Anne Fermor (1591-1675) |
| Brian Barnabas Macdonnchadha O'Brien (1590-1657)
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