Hm.... My dog's both have two names, heh.
Chardonnay got her name because she's really prissy and nothing else would fit but even then; while on all of her records it says Chardonnay, she will only come to Puppy. When we got her from the shelter, her name was "Sweetie Pie" but that's the most wretched name so we obviously renamed her. She was regrettably called "Puppy" for about a month until we came up with a name. And by then, there was almost no use of trying to get her to come to Chardonnay - and that's too long to just say all the time.
Titus' real name will be "Vin du noir et blanc" which simply means "White and black wine" which just keeps with the wine theme. I like themes. But his call name, "Titus" came from the fact that he acts like a little man. I had considered Atlas first but I was more interested in having a suitable name that no one else had and I know dogs named Atlas. He likes to take things in his mouth, snatch them away, and trot off proudly. And his jaws make him look serious all the time, so somehow we popped up with Titus and it just works. He was meant to be a Titus.
My babes: Chardonnay B/T Female(or "Puppy" Spring 2007); RCF's Vin du noir et blanc TRI Male(or "Titus" March 18, 2009)