::::Indeed, an interesting speculation, though I`d rather assume the letters C and L were meant to indicate Lisa del Ciocondo (in Latin inscriptions, a G is already inserted as a C). But, as I have already alluded to above, it does really not matter how good or how bad a theory is. It is very important that there are clear borders between what is common knowledge and what is not. Many things have to remain secrets, for their very nature. Within Wikipedia, it has been decided that only things should be loaded up that have already been published at an other, reliable place. If the theory that You`d like to include into this article should have been mentioned / described in any reliable publication, You would just have to include a reference to the related spot in the related book / website / issue of a magazine. As long as You do not do that, Your edits will very probably be reverted, again and again.