Characters
"Many are my names in many countries: Mithrandir among the Elves, Tharkûn to the Dwarves; Olórin I was in my youth in the West that is forgotten, in the South Incánus, in the North Gandalf; to the East I go not."
— Gandalf · The Two Towers

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker lists names used by different peoples and in different places, including a name from their youth. The catalogue presents one identity through many relationships and memories. The closing statement that they do not go east adds a boundary to this otherwise wide-ranging account of where they are known.
Context reviewed