First Doctor

An alternative universe version of the First Doctor is an incarnation of the Doctor.

Biography
The First Doctor travelled with Steven Taylor and Dodo Chaplet. On one of their travels, they went to 13th century city of Kiev. A short period after, they went to Logopolis. (He Jests at Scars... (audio story))

The Valeyard’s Attempted Course Correction

The Valeyard had planned to go back in time and kill Dodo in order to prevent his first visit to Logopolis, but never went through with it. (He Jests at Scars...)