No, I am of no relation to John Stamos.
My last name isn't Stamos.
I don't even speak Spanish.
And unlike many people in the web space today, "Stamos" is not simply my Twitter handle. It's what many people call me. In fact, depending on how you are introduced to me and who does this introducing, you may only meet me as, simply, Stamos.
Stamos, you see, is as much my name as Annie is (in the sense that my actual name is just Ann, but that name, while lovely, seems a little too plain for me, which works as I'm easily and often nicknamed).
And hey - if it means I am frequently confused with Uncle Jesse himself, well, I suppose there are worse things (see: Dave Coulier).