ArcticPaul:
Surnames are also nouns unless ending with -ski, -ska. In which case they become adjectives.
Am I correct in the above statement?
Yes, although it's hard to say if those surnames really become adjectives (from the logical point of view), but their declension is identical to adjectives, so grammatically we treat them as adjectives.
This
also applies to:
- surnames with -cki/-cka and -dzki/-dzka endings (for example Nowacki, Niedźwiedzka)
- surnames that are "pure adjectives" (fro example Cichy = silent, Czarny = black, Biały = white) although this case is more complicated, Polish laws allow people with surnames that are "pure adjectives" to choose if they want it with normal declension (Maria Czarna, Marii Czarnej, Marię Czarną etc.) or without any declension, then the
Nominative male form is used in all cases,
also for women, (Maria Czarny, Marii Czarny, Marię Czarny etc.)
ArcticPaul:
If I am correct are there any more names/parts of names that are treated as anything other than nouns?
Rather not, but there are nouns that follow the adjective declension pattern (for example "uczony" - I'm sure I wrote about it not long ago in one of your threads).