Tolkien's letter #180

[Ophelia]

Does anyone know if Tolkien left any statement about why he changed the names?

Well Bethy , my idea on this one is such : Tolkien gave many of his charecters two names (mayhaps some had more) and whilst writing the rough copy of everything , whilst it was still developing he himself developed his thought and knowledge in languages . And mayhaps , effected by all that , he came to use the second names instead of the first ones given .
And thank you for the kind words . It is interesting for me aswell

-Ophelia-