| P40 | child | ... | Q5162036 (Connor O'Brien, 2nd Viscount Clare) | Connor O'Brien, 2nd Viscount Clare |
| P40 | child | ... | Q75894489 (Teige O'Brien) | Teige O'Brien |
| P40 | child | ... | Q76034210 (Murrough O'Brien) | Murrough O'Brien |
| P40 | child | ... | Q76034218 (Margaret O'Brien) | Margaret O'Brien |
| P40 | child | ... | Q85198691 (Donough O'Brien) | Donough O'Brien |
| P27 | country of citizenship | ... | Q215530 (Kingdom of Ireland) | Kingdom of Ireland |
| P1343 | described by source | ... | Q15987216 (Dictionary of National Biography, 1885–1900) | Dictionary of National Biography, 1885–1900 |
| P734 | family name | ... | Q2043243 (O’Brien) | O’Brien |
| P22 | father | ... | Q5162039 (Connor O'Brien, 3rd Earl of Thomond) | Connor O'Brien, 3rd Earl of Thomond |
| P735 | given name | ... | Q14516546 (Daniel) | Daniel |
| P31 | instance of | ... | Q5 (human) | human |
| P25 | mother | ... | Q75278666 (Una O'Brien) | Una O'Brien |
| P97 | noble title | ... | Q7935726 (Viscount Clare) | Viscount Clare |
| P39 | position held | ... | Q18019039 (Member of Parliament in the Parliament of Ireland) | Member of Parliament in the Parliament of Ireland |
| P21 | sex or gender | ... | Q6581097 (male) | male |
| P3373 | sibling | ... | Q5296776 (Donogh O'Brien, 4th Earl of Thomond) | Donogh O'Brien, 4th Earl of Thomond |
| P26 | spouse | ... | Q75446951 (Lady Catherine FitzGerald) | Lady Catherine FitzGerald |
| P10849 | Beamish peerage database person ID | 3635 |
| P6829 | Dictionary of Irish Biography ID | 006457 |
| P646 | Freebase ID | /m/07k7zfh |
| P1819 | genealogics.org person ID | I00222512 |
| P1415 | Oxford Dictionary of National Biography ID | 20447 |
| P7929 | Roglo person ID | p=domhnall;n=o+brien;oc=2 |
| P2401 | Six Degrees of Francis Bacon ID | 10008994 |
| P4638 | The Peerage person ID | p21695.htm#i216943 |
| P4159 | WeRelate person ID | Daniel_O'Brien_(30) |
| P2949 | WikiTree person ID | O'Brien-4442 |
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