[THEME TWENTY TEN]name in footer

Hello!

im just new to wordpress and a leek with building a website.
I have the website http://janedewaard.nl and in the past ours i’ve put Jane de waard at the buttom of my page. I think it’s called footer.. But im not even sure. But now ours later i just dont like my name two times on my website. i’ve been searching for hours. I’ve being searching inedit -> editor footer but there i can not find it. Can somebody please tell me how I can change that text.
Yes i want my header with Jane the waard. Just not in the buttom also.

please explain to me step by step as easy as possible. Im really not good with wordpress/or all these codes