http://cantinacustoms.tripod.com/id18.htm is a good source of information but I do not agree with all of it and there are parts that I consider misleading. It is worth a look, so check it out when you have a chance.
Note: You may notice some of the names that he uses in my list, for lack of a better way of identifying the character. These names will fall into the "alias" category, along with other names that I found associated with each character.
Another good source of information is wookieepedia http://starwars.wikia.com/wiki/Main_Page
Although it is also flawed, this was very helpful in some of the decisions that I had to make.
I have tried to use only "official" information. But, I have included some unofficial information as well as some assumptions that I was forced to make. I think that I have noted within the guide where the unofficial stuff pops up.
I do not consider this guide complete. It is a work in progress and it has progressed as far as I am willing to take it at this point. Please feel free to point out errors, question the information or add to areas where I failed.