Slany O'Brien Peerage person ID=154831 (d. 1344) Parents Connor Roe O'Brien Mór MacNamara Children Aveline fitz Nicholas John fitz Nicholas, 4th Baron of Kerry and Lixnaw Margaret FitzMaurice William fitz Nicholas Maurice fitz Nicholas, 3rd Baron of Kerry and Lixnaw Siblings Brian Ruadh Ó Briain unknown O'Brien Tadhg Cael Uisce Ó Briain Partners Nicholas fitz Maurice, 2nd Baron of Kerry and Lixnaw