Board Thread:Wiki Discussions and Support/@comment-2140588-20141219170959/@comment-28861328-20141220172128

Guruguru was, in fact, not named in the manga, but on a character sheet in either the Jump magazine or the tankoban version. Tobi is named in the databook, therefore official, therefore the name we will use. The only matter left to decide is whether just to move the article to Tobi (which I don't think we should) or rename it Tobi (Zetsu). That isn't my opinion. That's what's going to happen.

Is Kurenai named Sarutobi in the databook? If so, yes, she will be moved. If not, then why compare it? Official name > everything else. That's all there is to it.