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| Tartan Name | Contrecoeur | | | | Category | District
| | | | Designer | Asselin, Madeleine | STA Ref | 2294 | | Date Recorded | Not Specified | STWR Ref | 2294 |
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| Tartan Name | Contrecoeur Dress | | | | Category | District
| | | | Designer | Asselin, Madeleine | STA Ref | 2295 | | Date Recorded | Not Specified | STWR Ref | 2295 |
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| Tartan Name | Conway (2017) | | | | Category | Name
| Reference | 11971 | | Designer | Urquhart, Blair, House of Tartan | | | | Date Recorded | 07/11/2017 | | |
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| Tartan Name | Coogan (Personal) | | | | Category | Name
| | | | Designer | Gregor, Douglas | STA Ref | 6782 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Cook | | | | Category | Name
| | | | Designer | Cook, Richard | STA Ref | 3403 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Cooke (Personal) | | | | Category | Name
| | | | Designer | Cooke, Bob | STA Ref | 2130 | | Date Recorded | Not Specified | STWR Ref | 2130 |
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| Tartan Name | Cooper/Couper | | | | Category | Clan/Family | | | | Designer | Not Specified | STA Ref | 332 | | Date Recorded | Not Specified | STWR Ref | 332 |
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| Tartan Name | Coopers & Lybrand | | | | Category | Corporate
| | | | Designer | Nicholls, Deirdre | STA Ref | 2303 | | Date Recorded | Not Specified | STWR Ref | 2303 |
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| Tartan Name | Coorie | | | | Category | Fashion
| Reference | 14822 | | Designer | Lochcarron of Scotland | | | | Date Recorded | 13/05/2025 | | |
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| Tartan Name | Coorong Pelican | | | | Category | Fashion
| Reference | 14974 | | Designer | Giles, Alison Margaret | | | | Date Recorded | 26/08/2025 | | |
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| Tartan Name | COP (Culottés Ou Pas) | | | | Category | Corporate
| Reference | 13030 | | Designer | Minne, Benoit | | | | Date Recorded | 22/12/2020 | | |
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| Tartan Name | COP26 - A New Dawn | | | | Category | Corporate
| Reference | 13105 | | Designer | Wilton, Brian | | | | Date Recorded | 30/03/2021 | | |
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