Norse-Scots
From the Brannan->Cowan->Walker->Rutherford->Douglas line we have many lines descending from the Orkney Island Viking kingdoms, including the Scottish Somerled. On this genealogy please start at Jean Douglas and explore both her paternal and maternal lines located here:
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=ancestorsearch&id=I20109&
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=PED&db=ancestorsearch&id=I20109&