perhaps a variation of "Buchanan Variation (Fashion)"?

" Name of Tartan:
Buchanan Variation (Fashion)
ITI Number: 3758
Category: Fashion
Designer / Source: Pendleton Woolen Mills
Date: pre 2002"
" Asymmetric. A Fashion tartan from Pendleton Woolen Mills"


(image from Tartan ferret/Scottish Tartan Authority website)
Click image for larger version. 

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