My older bro Ron asked me if he is supposed to start calling me Jefferson, since I seem to be signing things that way.
No. You don't have to call me Jefferson.
It is a Safeco nickname generated by putting my first and last names together and slicing out the middle stuff. Oddly enough, it stuck. And even though I have purged myself of Safeco, more or less, the single name thingie has stayed.
It started out as a joke, as in Jefferson being a one name entity like a Brazillian soccer player. They have Pele, Ronaldo, Kaka, Cafu, Fred, and the like and I am Jefferson.
I hope that answers the question.