The last die result is interpreted as the first letter of an appropriate suffix. You might want separate lists of suffixes for villages, countries, or any other kinds of names you want to generate, or you can just improvise a suffix that begins with the given letter and also fits the geographical feature being named. For example, here's a list of generic vaguely-English fantasy town name suffixes, in alphabetical order:
(Yes, I had to get creative with a couple of these.)
So, the roll in the previous post that produced "Sybad the Barbarian" would have produced a town name like "Sybildon" or "Sayberdoon".