This character appearing in Chapter 2 and 3 is most probably modelled
by Charles Lutwidge Dodgson who had a stutter and very frequently
pronounced his name :
"Do-do-dodgson".
Dodo is an exitinct bird of Mauritius that disapeared in 17th century.
Please note that Charles Lutwidge Dodgson entry in the EB was put next
the entry of Dodo.