Who are Mr. and Mrs. Cozzens in the story, The Albanian Virgin?

Mr. and Mrs. Cozzens are Lottar's friends from Italy. They have joined her in traveling down the Dalmatian Coast. Mrs. Cozzens is a finicky woman who will not stand for Lottar's of adventure. It is because Mr. and Mrs. Cozzens are unadventurous that Lottar ventures out on her own at the break of dawn the morning that she is taken captive by the tribe.