I've read the Wiki but I'm trying to find books (in game maybe) that talk about Orc refugees heading to Skyrim and recent events involving orcs. Any ideas?

I believe it's only mentioned http://www.uesp.net/wiki/Books:Lord_of_Souls.

i forgot the name, but i can tell u pre-Skyrim lore about the orcs..

Orcs lost their only homeland because the Bretons and Redguards united to attack the ONLY homeland the orcs had "i forgot the name"
now the Orcs are without a homeland "again" and are reduced to living in tribes / strongholds or blending in with the populations of the other races.. Times are tough for the orcs but they are a strong people and seem to manage

Orcs have it the second hardest right now... but they are used to it

This thread got me reading some orc lore (seeing as im playing one). Was surprised to find out that they were once elves, and it was interesting reading about the Orc strongholds and their 'code'. Very cool, and now the first thing im going to do is visit the shrine of malacath!