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  • Daniel O'Brien, 1st Viscount Clare, 1st Viscount Clare (c.1568 - 1666)
    O'Brien, 1st Viscount Clare (Gaelic; Dónall MacConchobhair Ó Briain) was the younger son of Connor O'Brien, 3rd Earl of Thomond and Una O'Brien.He married Lady Catherine FitzGerald, daughter of Gerald ...

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