Magic in Middle-earth

[Galin]

Originally Posted by Puddleglum

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

Yes, and Tolkien's (very) late writings point to the fea of Durin returning to an uncorrupted body.

Strange as it might seem: the special connection between a particular fea and its particular hroa looks to have became important to Tolkien: he thus abandoned Elves being reborn (as children) as a form of reincarnation, because they would have 'new' bodies... and JRRT seemingly found an idea to avoid this with the bearded folk as well.

See Last Writings, The Peoples of Middle-Earth, for late thoughts on this notion.