Mrs. Dean Clears Up Some Things: Wuthering Heights Journal: Part 2

It turns out there is an Abundance of Catherines in this novel, and we already met half of them.

Okay, so over the next four chapters, Mr. Lockwood's maid-ish person Mrs. Dean decides to talk to Mr. Lockwood. Lockwood is sick at the time, so to pass the time, he asks Mrs. to shed some light on this Heathcliff character... It turns out that she is somewhat an expert in the matter, considering that she was one of that particular family---the Earnshaw(/Linton) Clan---'s servants.

The basic synopsis is as follows:

• She discusses a Catherine (there are two... more on that in a few...) that was one of two children (Hindley is the other) and that her father brought in a child from Liverpool named Heathcliff (roughly the first Catherine's[hereinafter referred to as "Catherine I"] age)
• Heathcliff and Catherine I  bond almost immediately, and Hindley fades off and hates Heathcliff
• The father of Catherine I dies and Hindley swoops in and takes over with a new wife (who, side note here, is deathly afraid of dying).
• Catherine I doesn't particularly like this at first, but eventually Hindley proves a terrible authority figure, and chaos ensues.
• Joseph enters the picture again as the gentleman trying to create orderly Christian-ness ism. (I forgot to mention Joseph before fully, he's first introduced as a crazy old gentleman, later introduced via Catherine I's journal as the very religious Christian advocate)
• Which brings me to the next point: It is Catherine I's journal Lockwood stumbles upon.
• The second Catherine (Catherine II) is alive (as I guessed before) and through the genealogical tree, I have deduced that Catherine II and Catherine I are daughter and mother, respectively. 
• Mrs. Dean---Nellie for short--- goes into some childhood memories of the Earnshaws, one of which involves Catherine I and Heathcliff getting mixed in with the Lintons and their demon dog. 

I apologize for the bullet-pointed plotline but that was probably the clearest explanation I could give.

Now onto predictions: Not too much here, but I think Mrs. Dean will tell more about Catherine I. I'm not sure when Lockwood will make the Catherine I-Catherine II connection, but I think it will be soon. He doesn't have the benefit of a Genealogical tree for reference.

Lockwood, I think, even though it be quite stupid, will end up going back to Wuthering Heights. I think he has this fascination with the place itself, how much mystery it holds, and just how strange Heathcliff is.