Depends what you mean by lineage. A ferrets a ferret the way I look at it, there's a big enough ferret population here to ensure healthy genes, so most ferrets don't come with paperwork, come to think of it, I've never heard of a ferret having papers in the UK. Good lineage to most ferreters on here would be in the working ability of the animals, not how many shows that their parents/grandparents, etc, had won.
Well... I don't buy ferrets because their parents won lots of shows. That's not important when buying ferrets. Actually it's irrelevant.
When I write lineage i mean: Good