They are. I found out where I read this, it's the Pocket Guide to the Empire.
http://www.imperial-library.info/pge/wildregions.shtml
In retrospect, it doesn't mention goblins specifically, but it does identify orcs, ogres and gremlins as goblin-ken, meaning yes, they are related to goblins, and with that you'd think there would be goblins in Orsinium. I await the day we can visit Orsinium in-game to find this out - it sounds like a very interesting place.
"Goblin-ken" doesn't really mean anything, just a vague, degatory term lumping together completely different races. It's like the term "beastfolk", a label put on almost any race that does not resemble man or mer. For example, it is used on both Orc, Khajiit, Argonian and goblins, despite those are all completely different from each other.
Also, there are two other things to keep in mind about that book: Firstly, it is filled to the brim with Imperial propaganda. Orsinium was an enemy of the Empire at the time (it even says outright that the Orcs as a race were hated by the Emperor), and thus they try to derogate it as much as possible.
Secondly, and most important; the PGE was written before the Great Orc Ret-con had been carried out. Their background had not yet been established, and the story of how they turned from elves in to Orcs together with Trinimac-into-Malacath did not exist yet.
i mean,orcs probebly still have some grudges to other races,and would break their rules just for fun.
A race of kids in the defiant age?
and i think goblin slavery would be more like having a pet;they arn't smart enough to understand their held prisoners
though thats probebly wrong
Having a goblin as a pet would be like having a gnarly grizzly bear as one - they are not domesticated, like a cat, dog or a working ox. There is a reason they are enslaved.
what would the goblins have "evolved" from?i'm sure at some point they were alot dumber...
All creatures, races and people come from the same source - the et'Ada. Evolution does not exist on Nirn like it does on Earth (which isn't strange considering the world is only a few thousand years old), so goblins have probably always been as they are now. Well, at least their intellectual (and physical as well) capacities. They probably learnt how to use tools and such somewhere on the way, but the point is, they have always been able to learn it.
I enslave Corn, thousands upon thousands are standing in line for me waiting till I chop their heads off.
The Proletariat will rise again!