For the record, I've seen that circle called a targe, so it may be more of a shield than a cross. I never thought it was meant to be a cross, although I do see where it could look like one.
Tha mi uabhasach sgith gach latha.
“A man should look as if he has bought his clothes (kilt) with intelligence, put them (it) on with care, and then forgotten all about them (it).” Paraphrased from Hardy Amies
Proud member of the Clans Urquhart and MacKenzie.