Help identify this crest

[ThistleDown]

Yes, there is a significant difference, but the intricacies of that I will leave to our resident heraldic experts, Rathdown predominant among them. In the meanwhile, using the stag as an example instead of your wolf:

a stag's head erased (also called couped):


and a stag's head caboshed:



But on a more familial note, be cautious if you are attaching yourself to the wolf`s head as different from other crests to be found among the Macqueens. The wolf belongs to a particular -- and very small sept -- of the Macqueens of the Clanchattan resident at the upper end of Strathdearn. Unless you are claiming descendancy of that family, or are acknowledging some degree of dependancy on them, you might want to look to the broader Macsweens and Macqueens of the Western seaboard.

Cheers, Rex