there mainly nuttall blood
Im certainly no fan of Mr Nuttall or his "modern" 9" dogs Glyn,but they are a decent type of animal,i asume you have his older stuff in them dogs. atb.
the first terrier bitch this whole family are breed around was bred from poker,blitz2,duke,smithy,rags with some richardson blood i ve added bits of other blood i've been happy with them although you have to be carefull with them first season and they are not dogs that can be left in kennels for days