OK, I've got a question which has been bothering me for some time, and which
is appropriate for our beginner's level.

Many names, like nouns in the strong masculine declension, end in -r, which
drops out in other cases.

e.g.  Óláfr  Óláf  Óláfi   (nom. acc. dat.)

But why not the name Baldr?

In Voluspa we get "Ek sá Baldri",  not "Ek sá Baldi"

Different declension?

Tim