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| Tartan Name | Thirkill (Dalgliesh) | | | | Category | Clan/Family | | | | Designer | Heraldic Graphics, Glasgow | STA Ref | 6275 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thistle Dubh | | | | Category | Fashion
| | | | Designer | Geoffrey (Tailor) Highland Crafts | STA Ref | 6234 | | Date Recorded | Not Specified | STWR Ref | 2941 |
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| Tartan Name | Thistle Emerald | | | | Category | Fashion
| Reference | 13256 | | Designer | Bonnie Tartan Limited | | | | Date Recorded | 03/08/2021 | | |
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| Tartan Name | Thistle of Scotland | | | | Category | Fashion
| | | | Designer | Lochcarron of Scotland | STA Ref | 4158 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thistle Stop LLC | | | | Category | Corporate
| | | | Designer | Balfour-Traill, Cynthia | STA Ref | 5792 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thistled Pink | | | | Category | Corporate
| Reference | 15000 | | Designer | Kinloch Anderson Ltd | | | | Date Recorded | 02/09/2025 | | |
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| Tartan Name | Thomas Jefferson 1776 | | | | Category | Other | Reference | 14712 | | Designer | Paterson, Robert | | | | Date Recorded | 18/03/2025 | | |
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| Tartan Name | Thomas McGurran | | | | Category | Corporate
| Reference | 11589 | | Designer | Thomas, Andrea | | | | Date Recorded | 20/07/2016 | | |
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| Tartan Name | Thomas of Wales | | | | Category | Name
| | | | Designer | Daniel, Sheila | STA Ref | 5763 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thompson (Dance) | | | | Category | Fashion
| | | | Designer | Not Specified | STA Ref | 5132 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Thompson (Pendleton) | | | | Category | Fashion
| | | | Designer | Not Specified | STA Ref | 1443 | | Date Recorded | Not Specified | STWR Ref | 1443 |
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| Tartan Name | Thompson Black | | | | Category | Fashion
| | | | Designer | Pringles of Inverness | STA Ref | 3596 | | Date Recorded | Not Specified | STWR Ref | none |
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