[Steppes] Celtic Three Horse design

[Donna S. Mallory, CPA]

This may not be the proper forum, but my lord bade me ask on the list.
Brendan is looking for the source of the celtic design which is circular and
has three entertwining horses with celtic knotwork.  Does anyone know where
documentation can be found for this design?  Any help will be appreciated.

Anne the Spinster
AKA dsmallory at mymail.net