Magic in Middle-earth

[Puddleglum]

Originally Posted by blantyr

I was thinking of Durin I, Durin II, Durin III, etc... I don't think there could only be one soul for all of the Durins.

The Dwarves, at least, believed there was (only one Durin). <quote from Apdx A>

Five times an heir ... received the name of Durin. He was indeed held by the Dwarves to BE (Durin) the Deathless that returned; for they have many strange tales and beliefs concerning themselves and their fate in the world.

While this is only presented as something the Dwarves "believe", we know Tolkien did allow for Elvish reincarnation, and Dwarvish fate is something we know very little about - so it doesn't seem (to me) all that far fetched that one special Dwarvish Fea might remain within Ea and be reborn (reincarnated) multiple times. Why not?