The very same evening I met another friend who told me that it was actually her yarn. She had bought it on a trip to the Faroe Islands 25 years ago to make a genuine Faroese sweater for her husband.
However, the yarn had been hibernating under her bed until she decided to give it away for charity.
I knitted the French Market Bag straight away, and felt it in my washing machine. The market bag was huge and nearly killed it. But it is gorgeous.