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| | Tartan Name | O'Connor |  |  |  | Category | Clan/Family |  |  |  | Designer | O'Connor, Jerry | STA Ref | 2217 |  | Date Recorded | Not Specified | STWR Ref | 2217 | 
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| | Tartan Name | O'Connor / Ochiltree |  |  |  | Category | Name |  |  |  | Designer | Smith Jnr, Dr Philip D | STA Ref | 321 |  | Date Recorded | Not Specified | STWR Ref | 321 | 
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| | Tartan Name | O'Connor Dress |  |  |  | Category | Fashion |  |  |  | Designer | Scotch Corner (England) | STA Ref | 6398 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Connor, Hugh (Personal) |  |  |  | Category | Name | Reference | 11339 |  | Designer | Geoffrey (Tailor) Highland Crafts |  |  |  | Date Recorded | 13/08/2015 |  |  | 
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| | Tartan Name | O'Donoghue |  |  |  | Category | Fashion |  |  |  | Designer | Scotch Corner (England) | STA Ref | 6399 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Donohue |  |  |  | Category | Clan/Family |  |  |  | Designer | 'Smith Jnr, Dr Philip D | STA Ref | 6609 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Farrell |  |  |  | Category | Clan/Family |  |  |  | Designer | Not Specified | STA Ref | 1875 |  | Date Recorded | Not Specified | STWR Ref | 1875 | 
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| | Tartan Name | O'Keefe |  |  |  | Category | Clan/Family |  |  |  | Designer | Pendleton Woollen Mills | STA Ref | 1176 |  | Date Recorded | Not Specified | STWR Ref | 1176 | 
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| | Tartan Name | O'Long (Personal) |  |  |  | Category | Name |  |  |  | Designer | Tartanweb | STA Ref | 7246 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Mahony, The |  |  |  | Category | Commemorative |  |  |  | Designer | Wilton, Brian | STA Ref | 6491 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Meehan |  |  |  | Category | Clan/Family |  |  |  | Designer | Meehan, Frank | STA Ref | 5902 |  | Date Recorded | Not Specified | STWR Ref | 3054 | 
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| | Tartan Name | O'Monaghan (Personal) |  |  |  | Category | Name |  |  |  | Designer | Scarlett MBE, Jamie | STA Ref | 6266 |  | Date Recorded | Not Specified | STWR Ref | none | 
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| | Tartan Name | O'Neill |  |  |  | Category | Clan/Family |  |  |  | Designer | Clifford, Linda | STA Ref | 2663 |  | Date Recorded | Not Specified | STWR Ref | 2663 | 
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| | Tartan Name | O'Neill (Australia) |  |  |  | Category | Clan/Family |  |  |  | Designer | Not Specified | STA Ref | 2464 |  | Date Recorded | Not Specified | STWR Ref | 2464 | 
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| | Tartan Name | O'Neill Pipe Band 1983 |  |  |  | Category | Corporate |  |  |  | Designer | Johnston, Bill | STA Ref | 5536 |  | Date Recorded | Not Specified | STWR Ref | none | 
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