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| Tartan Name | Clan Irwin Association | | | | Category | Corporate
| Reference | 12895 | | Designer | Roeger, William (Clan Irwin Association) | | | | Date Recorded | 05/08/2020 | | |
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| Tartan Name | Clan McKay Drummers | | | | Category | Corporate
| Reference | 13700 | | Designer | McKay, Drew | | | | Date Recorded | 22/11/2022 | | |
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| Tartan Name | Clan Tackle Ltd | | | | Category | Corporate
| Reference | 14809 | | Designer | ScotlandShop | | | | Date Recorded | 06/05/2025 | | |
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| Tartan Name | Clanedin/Commonwealth | | | | Category | Commemorative
| | | | Designer | Stillie, Tom | STA Ref | 1619 | | Date Recorded | Not Specified | STWR Ref | 1619 |
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| Tartan Name | Clann Taic | | | | Category | Corporate
| Reference | 14964 | | Designer | Williams, Robert | | | | Date Recorded | 12/08/2025 | | |
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| Tartan Name | Clans of Caledonia | | | | Category | Corporate
| | | | Designer | McLaren, Shaun | STA Ref | 5923 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Clanton (Personal) | | | | Category | Name
| | | | Designer | Not Specified | STA Ref | 4000 | | Date Recorded | Not Specified | STWR Ref | 2734 |
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| Tartan Name | Clare County, Crest Range | | | | Category | District
| | | | Designer | Viking Technology Limited | STA Ref | 7444 | | Date Recorded | Not Specified | STWR Ref | 3078 |
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| Tartan Name | Clare, County | | | | Category | District
| | | | Designer | House of Edgar - Macnaughton Holdings Ltd. | STA Ref | 2248 | | Date Recorded | Not Specified | STWR Ref | 2248 |
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| Tartan Name | Clark | | | | Category | Clan/Family | | | | Designer | Not Specified | STA Ref | 633 | | Date Recorded | Not Specified | STWR Ref | 633 |
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| Tartan Name | Clark of Ulva | | | | Category | Clan/Family | | | | Designer | Wilsons of Bannockburn | STA Ref | 246 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Clark's Harbour | | | | Category | District
| Reference | 12106 | | Designer | Stoddard, Leigh B | | | | Date Recorded | 06/04/2018 | | |
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