It seems like a lot of proper nouns don't decline in the oblique case, but some do. Here are some examples I've seen:
Pirtûka Serdar baş e.
Keçên Simko dirêj in.
Xwişka Azad kî ye?
nameya Elî
Bavê Zelalê mamoste ye.
şûşeya Eyşanê
Does anybody know why the first ones aren't "Serdarê, Simkoyê, Azadê, and Elîyê?" I can't seem to figure it out.











