This is actually a take on my family crest, we come from Greece and the section where it switches color is due to the fabric twisting and exposing the underside which is colored differently (this is commonly done on crests like this, but I do understand what you mean. This problem didn't exist as before hand it was not the only flourish, I think I'll have to rework that section) The flur de lis is actually French in its origin (why you think of New Orleans) however it has been part of many European houses, and on the other side of my family there is an offshoot way down the line that is actually Spanish. Oddly enough this French symbol made its way to Spain, and I felt it was fitting to honor that part of the family (as normally we just say we're Greek) so I decided to include a symbol that appears commonly from Spain. Granted it may not be that common, but I still felt it was fitting. In addition to that, I also felt it was a nice tie to the European side in general.
The Flourishes to the left and right of the main crest are meant to be a stylized version of the olive leaf crown awarded to the winners of the Ancient Greek Olympics.
The shield shaping was chosen to match the text, sharp connections and curves. A more masculine style, as other shields tend to be more feminine (or just very soft curves.)
The colors come from multiple meanings. First the light blue was chosen because if you have ever heard of a color personality test I am a blue / green individual, so my primary color (blue) was chosen. The gray color is actually a very dark blue so this is a monochromatic color scheme. The dark cobalt gray was chosen because black is a very powerful color, and generally screams "status." I didn't want my logo to be overwhelmed so I decided to bring in more of a gray aspect, yet keeping that power status feeling.
Finally the Joe Coulas on the bottom is actually left over from the original design. That used to be my logo, with the J and C from the crest instead. It acts as a platform for me to insert a tag-line or any kind of call to action like my number / email.
Overall the concept isn't "Ye Olde' Knights" as Derrel put it. The concept behind the logo aside from family heritage is "Lasting through the ages." Which is achieved from the various styling chosen through the ages.
I appreciate the interest